BIP 110 has already succeeded. Miners stopping mining Bitcoin in response would be a reason to change PoW, but there's no reason they would do that

And by "stop mining Bitcoin" you mean miner who do not update their software to support your new version of Bitcoin?

NEW VERSION: One compliant with all previous versions...What a dramatic change!

That's just not true. Prior to the block height of activation all transactions currently within consensus are valid. It is only once RDTS is activated that blocks will be thrown out by other nodes. OP_RETURN was originally intended to be a testing opcode and wasn't meant to be used on chain.

I am not demanding anything. I am telling you technical details about how Bitcoin works.