> That letter reads almost identical to internet hate comments

the corners of the internet that you frequent have much more eloquent haters than the ones I'm used to

I think it's more that social standards of acceptability tend to continually degrade. There was a time when calling someone a scoundrel or a rascal was one of the most vile insults imaginable, potentially worth fighting to the death over, and I mean that completely literally.

I used the word 'degrade' earlier and I'm not sure fighting to the death over rascal is a higher state of enlightenment, but I do think words should have meaning, and now they mostly no longer do because everything is always hyperbolized to the most ridiculous degree.

So if the FBI was doing something akin in modern times they'd probably weaponize their knowledge by framing him as a viable rapist or other sort of sexual predator as opposed to a simple womanizer.

the modern internet has given everyone a higher level of immunity to this kind of thing now that it's in the background everywhere at all times; the FBI would need to step up their game today

One commonality is the lack of restraint that anonymity can produce.