Perhaps somebody needs to invent that device that allows us to punch people over the internet.
There is empirical evidence otherwise, e.g. toxicity on Facebook. On the contrary, it gets far more personal if people know each other too and petty infighting dominates.
Recruiters looking up your name on the internet is awful. It got better, but a few years ago they haunted you to your last refuges.
Some people have their real names attached to their profiles, but I assume most prefer it the other way around.
I certainly brush off the seething wastrels when they come my way, but I'm merely another member of the community and I have the luxury of ignoring them, flagging them, and letting someone else decide whether they should be kicked out or not. I really can imagine that if you cannot ignore these people (or have to add five people to your /ignore, every single day) it will wear most people down to a nub after a few years.
of course the implementation varies from product to product but is usually not obvious to the other party