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?
If by collateral damage you mean the tweet you shared in your other post[1], I can't tell how that is related to preventing the Ordinals spam by patching the exploit because it seems like a mining pool refused to mine a CoinJoin transaction which is an entirely different discussion specially since they are arguing over the weird limit their pool sets on OP_RETURN which is another unrelated matter here!!!
Other than that if you have an actual case of a "collateral damage" caused by preventing spammers from exploiting the Bitcoin protocol, please share the actual case with the actual transaction so that we can analyze it and improve the preventing measures.
[1]
https://nitter.cz/SamouraiWallet/status/1732584009442443336