Somehow body shaming is okay if it's a skinny/unattractive guy?

I'm a YouTuber and Musician, who has stayed faceless the entire time, until recently. I uploaded a YouTube video talking about my songwriting process for my last release, but I didn't have a visual so I decided to just have my camera on. This is the first time I've ever shown my face and body on the internet, besides very personal accounts. Pretty much, the video was bombarded with dislikes and I got comments calling me ugly, telling me to hit the gym and change my appearance. I literally did not ask during the video. And while I've learned to not be too offended over the internet, this pretty much has just taught me that people do NOT want to see me, and that I'm gross to look at. It took me literally almost 19 years to feel even slightly confident in my appearance, and (almost) anytime I show someone what I look like when they didn't know previously, I get a bunch of shit for it.

It feels like people think it's okay to body shame if it's specifically a skinny guy, as if there isn't a strong possibility that person has some kind of eating disorder. I have literally no idea why, but it feels like shit honestly. And yes, I am a very skinny guy. If you're gonna just comment telling me to gain weight or to hit the gym you can go fuck yourself.

To anyone else, thank you for listening, that's the last time I ever show my body and face on the internet, because people do not like it. There is no benefit as people shame me, and probably will click off faster since they don't like the way I look.