Yeah there's actually not really a point to academy if you're going to have like teachers and whatnot. The only thing academy excels at is being very descriptive about what you have to do in the absence of players willing to explain it to you. Otherwise everything in academy is pretty much covered in jumps 1-10 of other, better, lower-tier maps.
Danny made several statements about better players being bored on the map being the same as worse players being bored on a harder map, but this is not really comparable. A hypothetically worse player on a map that covers the same basic skills as academy in addition to more won't ever make it to the "more" part. If they make it to anything that academy doesn't cover, they'd have mastered the skills academy teaches. If they never make it to the additional parts of the map, they're struggling on the same stuff that would be on academy, there's just not a significant part of the server bored on a relatively short and easy jump map.
Academy's very descriptive, but having something described to you doesn't mean you instantly master it mechanically. Forcing an entire server to sit on academy because a fraction of people really don't understand how to jump, (or more likely, some people got on the server and rtv'd before it was really populated) is comparable to going out to skate with all your friends but forcing them to all stand around your driveway while you try to master a kick-flip on your lawn. Sure, it might be a great way to learn how to kickflip, but it's not really an enjoyable or engaging experience for most of you.