Disclaimer: The following text may cause heart failure for Hysteria fanboys. I won't pay your ambulance fees!
Hysteria got put into classic league after a poll with a 56% majority voting for the scheme. Back then nobody really knew what competitive Hysteria looked like because at that time nobody had played it that way. Now, a good 4 years and numerous complaints by oldschool wormers (who have actually played it, I may add) later the scheme still persists. "Because it's popular".
I won't deny that there's a certain skillset which one needs to stand on top of the Hysteria rankings. However when it comes to the top of the ladder duking it out among each other, there are games in which both players are in a 1vs1 stalemate position where they would hypothetically teleport around the map for all eternity because they both can't get a shot at the other. Usually this cycle is ended by one of the two losing their patience, teleporting to either an open spot where the other player can get a shot at him, or to a spot which provides protection but no chance to actually shoot. In the latter case the other player will just enforce SD so the hidden player will have to teleport to some open place on top eventually. Either way it's a loss-loss situation and could be avoided by just continuing to teleport around in the aforementioned cycle and waiting for the other player to lose patience first.
I don't expect anyone to actually read and understand this but I've seen several situations like this, the scheme is just not suited for high level competitive play.
Random00 is a really good overall player and has this winning mentality, he never gives up. That's part of the reason why he's on top of the Hysteria standings, he lets others do the mistake before he does it himself. And that Maverick guy has a winning percentage that high because he mostly played complete newbies who lack general knowledge about the game.
I won't bother looking up games or providing any other kind of proof btw, my words make perfect sense if you just let them get through to you and if you've played the scheme on a decently high level. Not gonna bother with Komos incoming wall of text either. (Just let this stand as my opinion rather than facts if it makes you happier Komo, it's obviously something only very few people can see.)