The strange thing is that while I've met or corresponded with a lot of people who have had problems with rotting and significant rust on the blade, I never have - and there have been times when I didn't wipe mine dry, but just let them air dry, and a few times I left boots in the car, and I haven't been consistent about using wax (I think leather conditioning oil works almost as well).
My current skates (which were way over my level) have seen a few thousand hours on ice over about 11 or 12 years. I've used some blades for a few years at a time.
I had a little rust form on non-stainless steel screws - I replaced them with stainless screws.
I have a theory about this: If you have good quality equipment, you won't have major problems with rot or rust unless you do something extreme, like keeping the skates in a trunk, hot car, bag or box, leave the plastic guards on for more than a few minutes, or you store them somewhere that stays humid all the time.
Yet, in theory it makes sense to use Soakers or equivalent breathable guards, dry the blades and screws and coat the blades and screws with a layer of oil after every skate, especially if you won't skate for more than a day, apply a wax to the outsoles, keep the skates in the open indoors or inside a breathable mesh container (a $0.99 supermarket mesh bag is probably better than a relatively unbreathable $140 Zucca bag), and don't leave them in the car any time you don't have to.
For some people, this stuff is too expensive to be careless. I mostly do these things now, though with my current stainless steel blades, I don't use oil if I am going to skate within a few days.
P.S. - I just fixed my wording. I'm sorry if anyone thought "in the open" meant outdoors.
If you use oil, make sure it is a very thin layer, so you don't mess up the ice.