Wrong. The pattern is that propaganda organs like Media Matters gets some disgruntled Fox employee to make accusations that can't ever be proven one way or another. Much of the time these FOX "contributors" are left-wing hacks. The other times they are employees whose careers have swirled down the toilet bowl, like Gretchen Carlson.
The nature of sexual harassment is that the harasser is always more powerful than his victim. You can't threaten the careers of your equals or your superiors.
As for no evidence, if these women have Bolling's dick pics on their phones, this constitutes "evidence".
FOX News is a toxic workplace and that's on Roger Ailes and Rupert Murdoch. For years Murdoch tolerated and enabled the behaviour of Ailes, o'Reilly and others by quietly settling the lawsuits that resulted.
Now that Rupert's sons are taking over, they have indicated they won't continue to cover this shit up and if you're caught, you're gone.