Before I discuss the manosphere, I want to make two things very clear:
Men's issues and the manosphere are not the same thing. There are issues unique to men that should be discussed, explored, and addressed. However, the manosphere takes these real problems and prey on vulnerable men while bashing other groups (especially women).
The manosphere is more of a pipeline than a community. You start as a normal guy, but the longer you stay in the community, the more extreme you become. If you look at some of the key figures in the manosphere, they become more extreme with time.

For those not in the know, the manosphere is a group that preys on hurting men and convinces them that the natural order for men is to be superior to women. They also believe that the world's problems are due to women not knowing their place.
uhighmidway.com/19241/showcase/falling-into-the-manosphere-pipeline/Again, there are levels to how intense these beliefs are, but that is the central unifying idea.
Incels are a part of the manosphere. However, while most manosphere men want to be high-value men, incels see themselves as failed men. They are very bitter about it and blame women for all their troubles. Within the incel community, there are incels who "trans-maxx". The thought process is that if you cannot get a girlfriend, you can always be the girlfriend.
It's hilarious on the surface, but it's chilling when you dig deeper. As I mentioned in an earlier post, incels think that women live on easy mode. It shouldn't come as a shock they are bitter and loathe women with every fiber of their being (while wanting to have sex with them). So, for a trans-maxxing incel, They are just trying to get in on the hustle.
I am not going to deny their transness. I truly believe some of them are trans, but have some ... things to work through. However, given how incels view trans people, I find it highly ironic.