I'm not sure I understand why there is any confusion regarding Mastodon. If you understand email you understand Mastodon instances... where is the confusion?
Yeah, I have explained to my dad many times that he can check the same email account from his tablet and his PC but he just doesn't get it. To him, his gmail is only on his tablet and his Comcast email is only on his PC and that's that.
Hell I explained this to my elderly mother and she got the idea straight away. So no I don't see how the confusion is obvious.
And acknowledge that social questions are messy. “Which cafeteria table should I sit at?”
Is comparing Mastodon to email a good comparison? Isn't email a protocol and isn't Mastodon a piece of software?