But even with email people can lose their funds if they have setup 2FA and lost the OTPs and recovery codes. I think that you even said on the website that if you lose the 2FA device and recovery codes you lose the account and funds. And you even encourage to use 2FA and as you said, no one has asked for help to get access. So I politely disagree, I don't think is valid reason to not allow signing up with a nostr extension.