knots filters are actually targeting the inscriptions as well btw.
your image is wrong.
also, this is a very simplistic view of the network. because nodes can and does effect miner behavior as well.
also, OP_RETURN doesn't stop inscriptions, filters that core doesn't have does.
in reality 2 years ago core didn't merge the updates to filters to stop inscriptions taproot exploit, which caused utxo size to explode in the first place. you can argue if it was on purpose 👃 or not, but thats for another time.
There's a sniper outside the building pointing at the last guy also called "Economic Incentives". OP_RETURN nonsense allowing illegal images will be abandoned by Bitcoin companies and who do not want to ruin their brand by enabling the relay of such and such.