dont ban, its not incredibly broken. it can definitely be played around unless its a bad matchup or the mons you have are tiers apart. but then again the result would be the same in those cases without dmax. it had to go from ou and below but its fine here.
Dynamax Vote: NO BAN. Random Battles is how a lot of newer users on this site get into competitive Pokemon, and I think getting rid of the cartridge's core mechanic would discourage a lot of new players from enjoying this ladder. People may say its unbalanced or whatever the case may be, but i didn't actually find it too overbearing nor did i not have immense amount of fun doing these 60 games.
Dynamax makes Gen 8 battles really exciting, and actually has sufficient counterplay imo (except for birds, birds are OP).
Also Dynamax has done wonders for the Monotype Random Battle format by closing the gap between unfavorable type matchups. #savedyna #exceptmaybemaxairstream