I agree and disagree missy- I think you need to be less pedantic and see the point that the OP is trying to make rather than picking up on and attacking a few generalisations.
Yes, it's true that generalisations were made, and yes it's true that those inferences cannot logically be made and that they are, as such, incorrect.
However you must address the actual point being made which is that this particular rapist is not simply the product of his own deficiency and nature but is a product of the culture he exists in and the rape and porn he has been subjected to, and the wider social discussion around that.
It is rather poor and low quality casuistry to attack the argument in the way you have. Saying that it's harmful to make these generalisations is an attempt to derail the conversation away from the wider social discussion around porn and misogyny. If you want to have a discussion around the harms of feminism start your own thread.