but user still need sign-in KYC google account
The thing I want people to see most is that people can back up their events on their computer without needing to self-host a relay.
standard format blob file encrypred on local computer would suit me fine
Exactly. I wouldn’t cheer anything that connects to the big corporate applications that collect a lot of your data.
buy cheap used chromebook. 50 bucks and you can make several accounts that use device for 2fa and google trusts as base identity. Use it when you have to verify the things and otherwise leave it turned off.