If a person makes a statement that amounts to "I hate women," then calling them a misogynist is a bit of restating the obvious. It's like calling a person a racist after they state "I hate all the <insert ethnic slur>". The person's initial statement already includes an implied admission of such, and people make such statements specifically for the purpose of displaying their racism to an audience.
I have yet to encounter a male who has not been through an "all women eat souls" period. Depending on the man and circumstance they might spend a week, a month, a year as a misogynist, but I have yet to meet the man who has not spent at least a day with a sincere and passionate hatred of women in general.