If you could convince incel types to see women as actual people (not objects they are entitled to own), and as a consequence to see more types of women as desirable (not only the most model-like or mainstream media-like), then far more of them would find affection. But then again, if you could change those personality traits, they wouldn't be incels.
I think this is a pretty lazy answer, and it projects to reality assumptions that aren't in evidence. It's convenient, because it puts all the blame on the people struggling because they're evil and as such unworthy of social consideration. But it's just a rationalization to say that the main reason some men struggle is because they believe that women are their slaves and because they only pursue Instagram models.
Indeed, speaking from personal experience the stereotype is a pretty false one. Then again maybe I’m just not hanging out in the circles where stereotypical incels hang out.