No. People are misrepresenting the issue.
This comment makes it sound like some complex heuristic is being used to subjectively determine what is spam.
The spam filters in question are dirt simple.
You are allowed max 83 bytes after Op_RETURN vs 100000 bytes now in v30 which is crazy.
You can count the bytes in known inscription exploit technique as its done in Knots, or allow all inscription data in like with core.
Actually Knots has that as configurable so its node runner choice.
The doam filters are just limits to arbitrary non-monetary data.
"Every spam filter without cost becomes a centralization vector"... WTF does that even mean?
This is nonsense.
Nurdening nodes with hosting arbitrary data is a centraluzation vector.