It’s okay to skip/stop watching a let’s play or other video because they start eating. You’re not less of a fan. I’ve recently had someone tell me “yeah, it’s a little annoying but I keep watching because I love Achievement Hunter”. And that’s not cool. I adore AH, and all of RT in general, but there are some things that I just can’t handle, and eating in my ear (eating/mouth sounds in general) are the worst thing to me. It’s not “annoying” it’s impossible.
So if you can’t watch a video because they’re eating, it’s 100% okay. You’re not less of a fan.