@atomicpoet I agree with you, I'm just communicating my experience explaining it to folks.
I've asked people what email service they use and they've said, "what do you mean?"
"Well how do you get emails sent to you?"
"Just on my phone,"
And it often ends up being Gmail or .me and they've typically signed up for stuff by pressing the 'Sign in with X' button. Or they have it written down somewhere because they type it in so infrequently it's not important to memorize.