wait a minute though. Runes just uses OP_RETURN. There is no abuse going on there. OP_RETURN is a valid op code and it was approved through a reasonable process. if you have a problem with how people are using OP_RETURN then where were you when OP_RETURN was invented and put into use?
That's like saying email spammers aren't abusing anything, they're just using the system as it was created.
Blocks are filled for 90% with
crap like this, created by an automated system and broadcasted in batches. Bitcoin needs a spamfilter.