I think it is wrong from a legal perspective and a court of public opinion perspective to differentiate illegal arbitrary data between STAMPS, OP_RETURN, and ordinals. still if large OP_RETURN values bother you so much, you should make a fork of bitcoin where they are invalid in consensus. it doesn't matter what core does and it doesn't matter if lots of people run knots. these transactions are still valid and we must assume that some miner will get them and confirm them because of censorship resistance. you must make them invalid in consensus.