There would be tremendous pain in that situation. Consider the businesses, infrastructure, and livelihoods that are built atop email addresses. So that would be a pretty effective lever with which to coerce people. All I'm saying is it would be nice to have some leverage against that, to prevent that suffering, not simply a protocol that will weather the damage.
Yes but imagine if you could take your email address and just log in using a different provider. Probably you wouldn't even claim to be using "Gmail" or "Hotmail", you would just say you're using "email". Just like we don't say we're on Damus or Amethyst or Primal now, instead we say we're on "Nostr". Better protocol in that disruptions may not be painless, but they are much less painful.
Point taken. It’s hard to shake my current paradigms sometimes.