No one has answered the question, so I'll ask again:
The sub-100 byte op_return has worked for 10 years. Why does it need to be changed now?
Discussion
So the answer is to simply change Bitcoin into something else? Not compelling to me.
Not compelling to me too. That is why I run Bitcoin Knots.
To me Citrea is essentailly a bad actor. They are free to have their economic incetives to turn Bitcoin into Ethereum like shitcoin.
I am free to disagree with them. And I do.