definitely keep talking about the problems, file issues on the nostr-protocol/nips and choose and praise clients that don't mangle it
i think so long as replacements require consent from teh original poster AND that the user looking at them sees the replacement only if they are following the replacer it should be no problem
i think if they break the security of identity in the protocol they will get hammered hard by the narcissitic, accusatory types who get a thrill out of ridiculing people and everyone will realise the mistake and laugh at the idiots who made it