My point is your current original comment is fundamentally flawed.
You add to that flawed example with “You don’t go logging in to other e-mail providers because that is where the people creating the content are.” because not only did it deviated from your original point in the original comment, it has nothing to do with what you’re talking about, nor what is *in your original point. To add to that, email, while federated, is not meant to be accessible to people outside the intended recipient.
Your whole original comment was, “Stop thinking Reddit and start thinking email. You don’t log in to Hotmail with your Gmail address to read mail sent to you from Hotmail.” in which I debunked that claim.