How about if we rephrase it as "don't do things that someone else can victimize you for." Can you see how there can be a correlation with victim blaming?

The contextual difference here is that the woman in question was dancing at a private party. That is something that's okay to be comfortable with, even if a friend is recording. Thus, the problem here isn't that she shouldn't have done that, but that others victimized her over it.

That's why Rally's advice is getting criticized. It's getting correlated with "don't do things you enjoy in private with your friends because someone terrible might do terrible things to you." This is genuinely terrible advice.