If incel just means misogynist, why does incel have so much more bite? The connotation of incel is imo three things: misogynist, sexless, and the latter fueling the former.
When one calls Andrew Taste an incel, first and foremost they are declaring him a misogynist. However, it doesn't stop there, otherwise misogynist would suffice, so at least one of the two other connotations are intended. Making fun of people because they turn lack of sex into misogyny? Sure go off. But I fear a lot of people are implying the other connotation, making fun of people because of their lack of sex. Unfortunately it's not always trivial to tease the meaning out of every use.
As a virgin, idrc either way. I've never been one to care about implied or unintentional indirect digs about sex.