You are generous. Some incel/femcel types I've met were not picky... they were just totally undesirable human beings, either physical, socially, or emotionally.

You may not believe it, but some people are the dregs of society and nobody wants to associate with them at all and no amount of 'improvement' will ever make them desirable to be around or date.

Are some incels/femcels decent looking folks who are misguided? yes, and those folks may get out of their rut.