I doubt it. More likely it is a new behavioral pattern that results from indirect, long distance interaction between people in one of the many new contexts created by the internet.
You may feel that modern society is "diseased" in some way, and that may be a reasonable characterization of some of its aspects, but I am not aware of any data showing that internet trolling is anything but a new behavior pattern.
If it is a "symptom" then what is the disease?
I don’t even think it’s a new behavior.
Asshats have always been around. It’s just that it used to be that you had to be physically in their presence to notice them. Now they have better reach.
But Trolls have always been a part of the human experience.
Oh, and they seem more prevalent because whiners also have a whole lot more reach on the internet. They’re as hard to avoid as the trolls. When not dealing with actual trolls, we’re dealing with whiners constantly whining about trolls, which is just another form of trolling imo.