I have no doubt many of these claims are true. Had they not been, you would see more of a defense being put up by these guys. Most of them admitted they "did something wrong". To what extent, we may never know. Still, if an accusation is made and the guy admits to some level of wrongdoing, I don't see an issue with him getting fired. If, like with Jeremy Piven, he vehemently denies it and yet still gets canned, then I see that being a real issue, provided he really didn't do anything wrong. Problem is often once you are accused, you are permanently labeled regardless of the eventual outcome.
We all know people falsely accuse others of crimes. Dook lacrosse players, UVa frat boys, etc. There was some actor (from Karate Kid, IIRC) who was also accused of sexually assaulting his kids by his ex and it essentially ruined his career before she was proved to have lied about it. Those alone make me, too, hesitant to jump on someone until they are proven guilty.
With that said, there is no doubt that our sex crazed society has gotten way out of hand. Aside from the obvious "people in positions of power" taking advantage of those not in power (which has gone on as long as people have been in power), there are also those who I am sure would willingly do whatever some pervy mcperv wanted to advance their career. For every actress who rebuffed Harvey's advances, I am sure there were 2-3 others who dropped their panties without a second thought. Then there are those who strip to nothing and present it to the world to see who get bent out of shape when some dude wants to play grab ass with her in a selfie. She can strip down to nothing in a movie and make millions off of it, but sues someone who finds nude pics taken off her camera and sells them to the highest bidder and claims she has been sexually "violated" somehow. I can see where the lines are so blurred that someone can't tell what is right and what is wrong. Not excusing their behavior, just saying I can see where it would be confusing as hell for everyone involved.
I have 2 sons who are college age and one of my biggest fears is they get slapped with something like this. I could easily see them hooking up with someone who "regrets" it the next day and accuses them of something wrong. Or them horsing around like a lot of college kids do and someone getting "offended" and bringing charges against them.
Heck, when I was in college we were all horn dogs. I was on an intramural team called the 69ers. There was a team called Hooterville Express, too. Funny thing is we had girls who bought and wore our shirts because they thought it was hilarious. We all partied together and probably got way too handsy at times. I remember being at several parties and seeing the drunks all over every girl who walked in the door. The ladies slapped their hands (or their faces if it got too bad) and everyone went about having a good time. I am sure some guys took things too far, but I didn't witness it. Still, most of that stuff was just dumb, drunk guys doing what dumb, drunk guys do. Now, I dare say we would all get thrown in jail for some of the stuff we did back in the day.