The word incel refers to the object in the world where a person is unable to convince another person to have sex with them, involuntary celibacy, that's what's important about the word in fact because it's on this object that discussions are made.
Regarding misogyny or anything like that, these are just characteristics of certain people and don't really say anything about the object itself.
You can say that "in a social context, incel is a word to refer to all people who fall into an archetype of misogynistic men, etc." which is basically what this guy is trying to do, but that doesn't really matter because that's not what the word is supposed to refer to. If that were the case, there would be a need to always create a new word that would mean something like "the word incel minus a certain thing imposed on it." It's pretty easy to see how impractical that is, especially because the discussions would ultimately result in similar conclusions and would attract a similar "audience". It would be the same thing.
But it really doesn't matter because these people will never understand how organic it really is, they will always have this ignorant and simplified view, that's why they will never succeed in doing anything, they will never be able to "deradicalize" anyone, psychologists will fail forever in trying to dismantle incels, and that's why we shouldn't really care about how infamous the word can be, how anti-social
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