You’re being disingenuous.
The fact is no-one rolled up on her. Had folks directly contacted her via email for example, you’d have a case, and that might actually count as harassment. In this case, people simply watched a public YouTube video and commented on it. This is not the equivalent to rolling up on someone in real life with disparaging words, instead, it’s the equivalent of speaking amongst your colleagues about someone who’s not present.
The second point (that they must be ugly) is moot, it has no basis. One can just as easily say that what it really shows is that they must be very attractive, since unattractive people are less likely to be arrogant and more likely to show solidarity towards other unattractive people, whereas good looking people are known to mock those they deem less attractive.