Maybe I’m wrong about the legal aspect. Right now, the risk seems limited. But we don’t know what could happen in the future if OP_RETURN remains open.
At the moment, block template creation is largely centralized at mining pools. I assume they currently prevent clearly problematic content from entering the blockchain, or maybe not needed?
If the long-term goal is to decentralize block creation, then moving in the direction of v30 feels questionable. Block creation without any kind of data filtering mechanism could significantly affect Bitcoin’s public perception in the future, but that’s simply my critical assessment of possible outcomes.
I would be fine with the change too. If there were at least some indication that Core is willing to change something.
So what is the plan going forward?