Since the feature has been implemented can you point to a single case in which Microsoft "got it wrong?" I'll even be generous and include the entire year prior to java's chat signing in which the feature existed on bedrock.
Spoiler: you can't because that scenario doesn't exist. It's a FUD bandwagon argument, nothing more.
> I run a server. Chat signing isn't enabled. Upon login, the user sees a message along the lines of "chat can't be verified on this server." Reporting doesn't work. Everything else works just fine.