I'm not saying it's impossible, but at a minimum it's extremely hard to game the recommendation algorithm (primarily talking about Spotify, maybe Deezer's is less sophisticated). The best way to "game" the recommendation algorithm, to kickstart a new/less-established artist profile, is to get onto popular playlists. However these playlists either have actual quality barriers (so they won't put AI slop music on) or they take $$ (so this doesn't really work with the "mass generated AI slop" approach).