I think that's fair, but I'm not very technical. Knots plus Datum, a hasher constructing their own blocks with the filters they desire, is a defence against this kind of behavior?
Discussion
Knots actually doesn’t have anything to do with DATUM technically aside from that the same people providing and promoting knots have built DATUM. Knots is full node software, DATUM is a mining pool protocol.
So related, but also very different and independent projects. You can run DATUM just as easily on core with all JPEG and inscription invitations.
But more to your point. Yes miners constructing their own blocks is a major way to decentralize this sort of attack. Not perfect but a major step in the right direction