Let it happen naturally: all you have to do is pay more attention to the things Hetfield and Ulrich say and do, then their music will become nauseating. Or don't and continue to enjoy them, who cares.
Lucky for me I was a Megadeth fan and ignored Metallica over the Mustaine drama when I was a teenager, so when they went mask-off over Napster I locked in my opinion that they suck.