This may sound cynical to you but whatever, there is no reason for most mappers to even attempt making a competitive AD map, it's a waste of their time
Most AD maps are dogshit awful for 6s - nobody will test it and there are no good maps to learn any ideas from. These two things cycle into eachother.
Realistically it's hard enough getting constructive criticism from 6s players without a 'way in' (example- me with sideshow+stark, hyce with ipz taking a liking to logjam, meanwhile at the massive amount of 5cp maps that get 0 attention at all?) without gimping yourself with a mode nobody likes because of the past experiences, and probably won't play.
this will not change until a well known mapper puts time into it, AD is so stigmatised your way in basically has to be that you've already made a map played in league, people have to have a reason to trust you to make something worth playing or they won't even touch it unless you get lucky.
All of that to even get started, mapping is really kinda cut throat. You can't make a mistake, or your maps dead in the water (example- when hyce released a revamped mid which wasn't good before the season started, it killed the map completely) If you get a bad first impression on people, it's dead too (my map xd, or literally any map that had potential but wasn't quite there when first experimental cup happened.) And frankly, the stigma is enough that even if you had a good AD map, the first impression of many people is just that it's AD, so it's gonna be shit. For every positive comment on edifice, in the past cup, it seemed like there was one that dismissed it from being AD.
But for all of that, I'm certainly interested in AD for 6s, so are at least a decent amount of the players, I've got a concept map half blocked out in case the situation changes, or if drudgery gains enough traction that it's not a total waste of time to give it a serious go
tl;dr, the odds are stacked against you if you make AD, good luck finding a decent stock one.