OP,
An incel who is actually trying is worth having here. Learning how game works and understanding female nature (along with bouncing back after a bad breakup and exchanging field reports) is probably one of if not THE primary purposes of SS. Generally, this place is to help men out with women. I agree that the guys who just complain nonstop and don't listen are annoying, but I think those guys are a very small, albeit vocal, minority. But regardless, there is nothing inherently wrong with incels being part of this community. They are wired just like we are and WANT to have sex with women.
One of my very best friends IRL who is like a brother to me is what I would consider an incel. He hasn't had a relationship since a high school girlfriend almost 20 years ago. I doubt he has been sexually active in that time. And he honestly isn't a bad looking guy. But I envision him being here. He wouldn't know anything about attracting women and he lacks confidence in even speaking to them. But if he wanted to get better, this place would be a great starting point for a guy like him. He is a guy I would want to help. Everyone has to start somewhere.