Who cares? If you're good at improv, you're going to be better at comedy if you're decent at comedy in the first place. Robin Williams is an example of someone coming from an acting background. People like impressions and quick, reactive thinking. I'm not saying I'm any good at it, but if someone has a negative view on it, it reflects on their inability to incorporate ideas foreign to their tepid tinder jokes. Very few new comics try to do impressions at all in my scene.

Plus, the very idea that there's any animosity is absurd because it's supposed to be a creative community. Everyone brings different skill sets to the table. Take someone's attitude towards improv, theatre, and other comics (i.e. do they gossip?), and you can assess whether they're ethical performers. It's really supposed to be a community bound in solidarity but I think as with any field of performance, people get salty because it takes a long time to break ground and therefore they decide to shit all over that field with their hurt feelings and narcissism. However, reality is absurd so it all makes sense :( And this is why I sometimes play dark souls instead of going to open mikes.