Technically you can have an incel who isn’t a misogynist. Incel just means involuntarily celibate, most incels are misogynists, but some aren’t, and just don’t talk to people at all because of other mental health issues that don’t get treated making that person completely solitary and unable to communicate with others.
The term incel was coined by a woman who has been involuntarily celibate and saught to create a supportive community for people like her. The problem arrose later.