If one does use the filters they aren't the ones that allowed that block to be created so they do work to a degree. Also why is core increasing op return size to such a massive number, op return is the attack vector on bitcoin a and needs to remain low.
Discussion
What you said doesn’t make sense, non mining nodes don’t determine what gets in a block. Miners are economically incentivized to not filter to remain competitive.
Core is lifting it due to the realization that it doesn’t work. People can store that much today very easily even before upgrading to 30
Due to the realization that they failed to implement something that does work*