Core's argument comes down to "Yeah but let's make OP_return unlimited because they'll have to pay 4x more to store their bs than using the witness discount, the filter isn't working"
Then they proceed to say let's remove the filter. If the filter isn't working according to you, why not leave it the fuck in.
All this completely ignores the fact that I DO NOT WANT ANY ARBITRARY DATA, yet OP_RETURN gives them a corner of every individual's room to shit in. Imagine removing the filter that allows them to shit in the entire room.