In my experience, you can give two de facto incels the same advice.
The guy who takes the advice might not become Chad overnight, but they will definitely improve with women, have more options, etc.
The guy who doesn't will continue to blame everyone but themselves for their problems.
I'm not even sure what incels stand to gain by being 'right,' except the feeling of thinking they are right.
>You're right Mr. Incel. You are not my genetically equal. You are stunted and should be happy that an ubermensch like me is even acknowledging your existence. Happy now?
At that part, they usually come up with even more ways to cope - usually by calling everyone else a simp.
Altogether, they are bitter and egotistical- a very bad combo.
The guys who can get over themselves and try something new (and take advice from sources that have success) have a much more positive mindset, not just when it comes to women but with life in general.