You're missing Core pivoting from willful negligence to active malice. You're missing this being a problem that needs resolution 2 years ago. You're missing that Core denies miners using it that freedom. You're missing that nodes matter. You're missing that real L2s don't use op_return, only scams.
Discussion
OP_RETURN is used for LN channel backups
Could you share the source of this info? Googled for it and found nothing
Hmm very interesting!
Do you know how many bytes they need for that?