When I was 5 years old, I was with my Grandma in the kitchen. She was cooking and I was running around and kept bumping into her. And since this was happening quite a lot and interrupted my chaotic playing I called her stupid, *under my breath*. Very calmly she stopped what she was doing at the sink, turned off the tap, and wiped her hands on her apron. I knew shit was serious. She looks me straighten the eye, and 5 years old she asked me: Are you a man or a bitch? Some how I knew at 5 years old, in this moment I have to decide for the rest of my life, am I man or a bitch. Very proudly I said: I am a man! Very softly and calmly she says: Well a man always speaks up his mind! Equally proudly I replied. I said that you are stupid! Then she immediately slaps me over the head, not hard enough to make me cry, but hard enough to make a point and then she said: The other part of being a man is then you do speak your mind you will get hit in the face. Ever since then I have ALWAYS spoke my mind no matter of consequences or circumstances.
You can't really filter without losing permisionless. And since "they" will add data anyway, then eliminatet it from the UTXO set. It really is that simple.