Of course there are incels across the whole sexuality spectrum.

Of course there are incels across the whole sexuality spectrum.
Most men decide on the maximum cost they are willing to bear in order to have sex with a woman based on their ‘fxxkability’.
General rule of thumb is the more beautiful a woman is (in the eyes of the man, so it differs from man to man), the more money and energy a man is willing to put in to have sex with her.
The same rule can be extrapolated across the other end of the ‘fxxkability’ spectrum. The less ‘fxxkable’ a woman is, the less money and energy a man is willing to put in to have sex with her.
Up to a point where the ‘fxxability’ is so low that the man will not invest a single cent or energy to have sex with, this is what I would term as ‘incels’.
But that doesn’t mean a man will never have sex with women whom he deemed ‘incel’. Sometimes if the woman is aggressive enough or simply pay enough $$$ to him, things can work out.