Bdonskiit has less to do with whether or not it's overpowered and more to do with a passive bonus being an alternative to an aim dependent weapon being a really dumb concept
either way judging by how most invite players feel about it it will likely be banned next season
You could kind of apply that argument to gunboats as well though and I'm sure when they came out people
There's way less of a contest between gunboats and shotgun than there is between booties and pipes as well.
I think the issue most people have is it can be used as a crutch if you aren't very good, but I think they could end up changing the role the demo plays like we've seen with gunboats pocket. Removing airpipes does suck though.