Well, just because we can't eliminate all forms of abuse and patch all vulnerabilities, it does not mean we should not try to fix the fixable parts of the protocol where it is vulnerable and is being exploited.
Even when we're already seeing cases of collateral damage? Purely financial transactions are currently being impacted on the Bitcoin network because LukeJr is trying to create a hostile environment for non-financial transactions. If you try to make more things 'non-standard', it has significant consequences for legitimate use-cases as well. If you don't recognise the danger when when you're watching it unfold right In front of you, then I have to question what's wrong with your brain?