I am the same, self-hosting for many years and while I have the occasional question about it, it's easily corrected. I now have a short .com domain I use because my .fyi one was even more confusing to people, and simply didn't work with some systems I needed to use.

A bigger problem in my opinion is just how heavily people have associated "Google" with "the internet" and "Gmail" with all email in existence. They don't even think about outlook.com or even hotmail anymore. All email is Gmail to many people.