Neither do people rush to accept BIPs let alone PRs.
There is a whole slew of heuristics already used by Bitcoin core p2p code to react to known malicious or erroneous behavior.
The net result is that every node written to recognise some part of this hypothetical large scale attack will already auto blacklist any number of peers not following protocol.
The social response is something else, but 1tb and larger ssds are so cheap now... And you can sync Core in ender 12 hours on 100mbit or faster connections.
Alert me and mine will be back online the next day.
This is second day reminder. I am alerted. No surprise UASF tyvm.
Tomorrow.