Although it does seem somewhat interesting that all these big media personalities that lead interviews (and have interviewed presidents) are all going down at the same time.
It's like if someone was wanting to discredit the media with things that don't actually have anything to do with the facts of reporting, they're getting everything they could have wanted right now.
It started in Hollywood, which has its own sort of... particular culture. Hollywood has this wealthy, beautiful* in-crowd that's extremely interconnected, and then a rotating crowd of young people moving into the area and either succeeding at finding an "in", or failing and moving out within a couple years. Additionally directors have an extraordinary amount of power over their employees for many reasons. Its a situation that's extremely ripe for sexual abuse. And also an environment where bad rumors about people can spread very quickly, sometimes without the knowledge of the general public.
What we're seeing now is a generational difference. People have known about the sexual abuse and harassment in Hollywood for as long as Hollywood has been a thing, its just they turned it into a negative stereotype for the victims. That stereotype being the attractive female actor who got where she is now by giving people BJs. And additionally there's always been a semi-glorified stereotype associated with Hollywood of the lecherous wealthy old man who gets to have all the sex he wants (essentially Hugh Hefner, not him specifically but that kind of person).
Female millennials simply aren't OK with authority figures that are guilty of sexual harassment, much less assault. The older generations were OK** with leaving that as a sort of background noise that everyone knew about but was never brought to light. Resisting the control of corrupt male authority figures is
the issue for young women today and it will likely be the primary motivating political force for an entire generation of women. For example notice how even when we talk about abortion nowadays the narrative is often not about the issue itself, but about how abortion legislators are overwhelmingly male? That's because young women don't want to be controlled by old men. They don't see it as natural or inevitable any more. Trump is the ultimate powerful lecherous old man that gets away with everything, as a result he's unintentionally rallied women into a political activeness.
This was always going to happen. Its much like how with the millennial emphasis on a particular kind of "genuineness"*** in politicians always meant that politicians would be called to take an explicit stance on whether racism is bad. Trump was simply the catalyst for that, just as he's now becoming a catalyst on the issue of workplace sexual offenses. The cause and effect here goes "grab her by the pussy" > the women's march > hollywood mass sexual assault accusations > big 3 cable news network sexual assault accusations > general media/celebrity/artist sexual assault accusations > whatever the future holds. The women's march is going to be talked about in history books, it cannot be over-stated how much it is going to change the future of American politics. Remember a whole percentage point of the US population all came out for the same protest. That... doesn't happen. Not in a country this size.
For reference.*seriously if you ever want to give yourself a skewed perspective of what an ordinary person looks like, move to (some parts of) LA
**except the people that weren't of course, I mean its entire generations. It would be fair to say that boomers in particular were opposed to sexual assault and sexual harassment, just less opposed than they ideally should have been. In particular while some boomers campaigned against sexual harrassment, there's also a crowd that's looking forward to the day that they get their money/power and then they'll have infinite access to sex.
***which could be most accurately summarized as forwardness, directness, or honesty. Whereas for boomers, a politician appearing "genuine" meant that they were relatable, personable, or classy.