If miners start enforcing BIP110 out of an economic interest in keeping the network from forking, you may find yourself on a BIP110 compliant chain, and without any fork coins to dump. What then?
That might be the biggest load baring “If” I’ve ever seen. Any miner with the tiniest amount of intelligence isn’t going to run miniscript breaking dogshit software that does nothing to stop spam anyway. Give them some credit.