My aliasing service provides multiple domains to chose from whenever I create a new address. I try to mix them up but no, there aren't enough to have a different one for every single service. But together with the fact that I'm not the only user they have using those domains, I feel there's enough obscurity.
Still. It didn't even get released on VHS until 1988. It's one of the most famous movies of all time. Guaranteed many if not most millenials saw it as a kid.
For me, it's that I can make email addresses that are not able to be identified/associated with each other. Meaning alias1@yourcustomdomain.com and alias2@yourcustomdomain.com are clearly both the same identity. It's a fingerprint. This may not be one of your privacy concerns.
It's the same game...