1. Less male skaters in general than female; this is also dependent on the area, i.e. some regions/countries have a higher male to female ratio than others.
2. Some rinks attract male coaches more than others.
3. In our region, male coaches are more sought after than female due to their rarity, which means that having male coaches on staff will help bring in those skaters who want to work with a male. Also, they can double nicely as dance partners, if they care to.
4. Male coaches can be as good as, better than, or worse than, a female coach. It's not gender determinate; we have male coaches in our region who are immensely effective, as well as female coaches who are immensely effective.
5. My DD works with male coaches; we've never had a problem with the idea that she is being directed physically or handled physically, any more than we have had a problem with our DS who has female coaches who also direct him physically and handle him physically. Both are equally comfortable with coaches of both gender, as it's simply - sports - not anything else. Same thing, for us, as using a female doctor for a guy or vice versa; it's just personal preference.
My own "thoughts" on this, which are simply subjective observation over the years and also discussions with a range of coaches, is that, at the lower levels, coaching is more likely to be a part-time job. More women than men are able/willing/interested in part-time work. However, at the higher levels, where it is more likely to be a full-time job, men are more likely to coach as they are more likely to want a full-time position. Look at other branches of employment: where work is "less than full-time" you often have a much higher proportion of female to male due to the nature of female work patterns.