Well lots of offoces used Microsoft for email and out sode i workd email is password reset, receipts, and new account confirmation. When the last i sent and email that wasn’t work or those things? About 8 years ago.

But yes tryings to explain instance and federation to a regular user is only going to confuse them. We need mastodon to be a sample as login and use. If we bring up a single tecnical term we lose people.