I mean, they can be, but is there any reason to believe they are? Have male leaders of similar protests been treated better? Surely it's not right to infer gender bias just because the victims are women.
Yes, there is: women stepped forward.
> Have male leaders of similar protests been treated better?
Men either haven't experienced the same, or they are keeping their mouth shut.
In both scenarios, women should be supported. If men step forward, so should they. They didn't so far (or at least, not in large enough numbers for such a protest to be reported), so based on the data we have available to us, the problem affects women way more than it affects men.
But to answer your question, yes. If enough women were affected that they felt compelled to step out, and men didn't, that's clearly a gender bias issue.