Imagine that I will sharpen your skates and I do following kind of grinding to your blades. Can you list two clear problems what you can see on the attached sketch?
I looked again at your earlier post and tried to figure out what you were picturing. The problem is, I'm not sure how carefully you drew your diagram, so I'm not sure if some of this is misinterpreted.
1. The sharpener did not finish sharpening. It's like they took an insufficient number of passes with a grinding stone or wheel. Hence there are no edges. So the blade is not sharp, by any reasonable definition. There are people who manage to skate on very dull edges. But that isn't what people who bring blades to skate techs usually want. It certainly isn't what I would want.
2. The sides are not parallel, but are dovetail cut. Meaning that they are narrower towards the bottom. I think that is what you intended, but it isn't "clear" - one can only see it by looking at it in careful detail, or taking a measurement. However, if my understanding is correct, that isn't the way dovetail cuts are done. In your case, the sides are still straight. But if I understand correctly, the normal way to create a dovetail cut is to "hollow grind" the sides - i.e., you use something akin to a milling machine to create a concave hollow down the sides - somewhat like the hollow at the bottom. However, I suppose a blade could be dovetail cut that way.
I am curious: what type of tool could be used to create this type of dovetail cut?
3. The flat part on the bottom would normally exist only on a new blade, or a blade on which a skate tech used a cross grinding wheel in a very efficient manner, to create a flat surface to simplify the centering of the longitudinal grind wheel. The former isn't consistent with the rounded corners at the bottom - if the bottom were only worn, it would be ragged, just like the bottom rounded corners are. The latter removes a lot of metal, and in my view is not necessary.
(Incidentally, the rounded corners are ragged. Raggedness does happen in the real world, but I'm not sure if you meant to draw it - in cross sectional diagrams like this, people usually round them off perfectly, reflecting the fact that there are an infinite number of cross sections along the length of the blade, so that the shown cross section is an average, or that it is an idealization. In fact, it might just be an image compression artifact. [I used to develop and implement image compression and decompression algorithms. )
4. If the latter is correct, and the skate tech created the flat at the bottom, the skate tech failed to take the dovetail cut into account, so they ground the bottom flat at right angles to what appears in the diagram as the left side. Of course that is not at right angles to the right side. Which would defeat the purpose of grinding the bottom flat, because it would still be somewhat hard to center the wheel on the blade.
I suppose that if you mounted a blade in a holder that was only designed for parallel sided blades, this could occur. In particular, if the holder allowed a side honed blade to rock in angle a bit, and you rested the blade on the horizontal table which many sharpening machines have, that would cause the bottom grind to be at right angles to the side the blade rested on. Is that what you meant to show?
But again, that angular difference is not "clear" - you have to look or measure very carefully to see it. So I'm not sure that is what you meant to show.
5. It appears that the sharpener did not correctly center the hollow grind at the bottom of the blade, because they adjusted the height of the wheel incorrectly. If the skate tech completed the sharpening, there would therefore be uneven edges. I'm not sure if you drew that on purpose. But perhaps you were trying to show what happens if a skate tech tries to use the flat bottom (which in this case is tilted, because of the asymmetric angles mentioned above) to center the wheel. But again, that off-center grind is not "clear" - you have to look or measure very carefully to see it. So I'm not sure that is what you meant to draw.
6. But there is another interpretation to the tilted flat bottom. Perhaps it was created by normal wear by the skater, and you didn't bother to show the raggedness. In which case, the skater routinely uses their inside edge much more than their outside edge (as is common for beginners, and for many hockey skaters). Or, they center their skating on the edges they have, which were previously ground asymmetrically.
In other words, I'm not sure how to interpret your drawing, because I'm not sure which features were deliberate. The only part that is "clear" to the naked eye is that the skate tech did not finish sharpening the blade, so the blade is very, very dull.
Of course, it is possible for some accomplished skaters to compensate for uneven edges, though I admit I find it difficult to do so. And there is no reason to force them do so.
More importantly, it is possible for extremely good skaters to avoid skidding on dull edges if they very carefully align their weight (+ centrifugal force from skating on arcs) over the edges, but a less accomplished skater like me would skid all over the place on this blade.
Even before I started sharpening my own blades, if a skate tech had delivered blades to me in this condition, they would never have gotten my business again.
But I assume a skate tech as careful are as you are would sharpen side honed blades much better than this.