Ask anyone sufficiently conservative/radical feminist which groups of people they think are "probably rapists", and you get the same results as baseless discrimination but through a different explanation.

People tend to think "probably" a lot more often with a lot less evidence about individuals or groups they dislike for any reason.

For instance, I think you're probably a crypto-nazi and should lose your job, but that's almost certainly a totally unfair belief based on my very limited and highly subjective viewpoint.