But the thing we're comparing to is literally advocating for women to be allowed to drive. I categorically reject the notion that we have to ignore the content of the messages when comparing the cases. The slap on the wrist for making fun of victims is bad, but isn't comparable and any reader should know both that it was just a slap on the wrist and that it was for something that almost everyone would agree was wrong.
edit: also the article doesn't mention how large the groups were. There's every possibility one was quite large because you know it went viral