Your identity is your keys, not your event story. Who cares what you wrote months/years earlier than today - maybe only arrogant authors and their haters. Mostly we doesn't have time to read someone's events, and it has 0 value if it's not historical/important for protocol or some sort of superdooper shit. And who cares really what exact relays stores their events - all we need is to be here now and be visible/readable if we want to talk about something.