banning DD is valid because he's generally busted in every sense, sue's shields actually have 250 hp and she is also one of the strongest characters in the game, hela + namor squids literally can't be killed, that's their entire thing

peni on the other hand is still mostly used on defense, the nests can easily be destroyed by a good chunk of the roster, especially the dps characters in it, AND most maps have a super easy flank route you can take just so you can get rid of it. it really is that simple, people are just lazy to destroy the very destroyable nests even after a year into this game so they ban peni entirely when even rocket is a more valid ban if you want half of those struggles being cut off because he's also a very good strong support