That none of them have moved forward is more telling than the accusations themselves
I don't agree with that. There is never going to be "hard evidence of wrongdoing" for the majority of sexual harassment cases, which is why they are so easy to dismiss. You evaluate the veracity of the individuals involved and make a judgment. When there are multiple allegations of the same types of behavior from different women over a period of time, it strengthens the case that they are telling the truth.
Now, based on what Trump bragged about on the Access Hollywood tape, why would you believe him over all those women?
There was enough proof for Franken and Conyers to ditch before investigations could start. There was enough proof for Weinstein to get canned and go through fake rehabilitation.
The fact the Trump accusations never went stage 1 means there are probably hard issues with them, timing, common location, witnesses otherwise, etc.
And when it comes to bragging and bravado, THAT'S WHAT SOME GUYS DO. Every guy has a friend who's tales of his "conquests" 90% outweigh his actual results.
And it isn't just with sex, guys exaggerate to each other on freaking everything. We have a saying "True or NAME" for a friend who's stories have 5% truth and 95% embellishment.