Why do people look down on web developers?

I'm a web developer and I'm annoyed at how people who primarily do desktop development think they're better than me. I know shit like C++ and Java too, you know.

There is literally nothing wrong with being a web developer.

If you don't do full stack all the way from an OS you wrote yourself when you were 12 in C, built using your own C compiler you wrote when you were 10, with your own libraries and webserver, and own scripting language, and your own enterprise webframework, then you're pretty much a low-grade plebcudder.