You don't get spam if you use aliases everywhere. The few that actually get spam can be turned off.

Like I recently had to turn off alias for made4men.no. srsly, signing me up for spam and not removing me from the spam list even after i unsubscribed. You can tell it's a swedish shop that just happens to own a Norwegian domain.

I actually had to do the opposite. I have a filter that catches all messages marked as spam and unmarks them as spam. VERY rarely there's a spam message caught in there. Much more often sth super important that just would have landed in spam if not for my genius spam filter.