Thirding this, abusers like Arch feel like annihilape in that unless you threaten an ohko, you only make it even harder to wall, taking one or more mons with it, and with arch's amazing physical bulk, only special attackers can feasibly do this, which can be covered for by teammates.Body Press mons essentially render most defensive play worthless thanks to their ability to run mixed movesets while running extremely powerful moves like Draco Meteor and Overheat without any downsides. Offensive potential aside, they're also just genuinely good Pokemon, which ends up making it so one of them is on every team. I think Body Press is the biggest reason for the lack of any attempts at anything fatter than balance offense in the current meta, and axing it would make building way less monotonous.
I've been running bpress forte Coballion with aura sphere to try and get around the Draco + iron head combo, but it's shaky since tbolt is a 2hko with hazards and you don't wanna switch into EQ. Plus, I'm using the same forte that is so problematic in the first place, which doesn't feel like a great sign. It feels like there aren't any consistent walls to such a powerful mixed attacker, and the only option is to out-offense it.
Iron treads is similar, but at least takes a few turns to get going between rapid spin and iron defense, but then becomes just as unwallable, even more so because it's hard to outspeed a + 1 treads with scarf being practically non-existent.
There are also a bunch of lesser bpress abusers like Torkoal, Goodra-H, and Coballion that would quickly rise up if the above two were banned, and so it feels like the best option is just to restrict the move as a whole.