I think we have very different concepts of what counts as evidence or proof.
At any rate I see your point. People have used snarkiness in the past and it does drive engagement, which is what I said above.
The disconnect is that that engagement has not improved society in any way. It feeds the anger junky and helps them feel smug and righteous. But it doesn't drive change.
Nothing personal, but I find this conversation dreadfully tedious. I've had it almost word for word with probably dozens of people with anger issues now. Every one of them feels their anger is righteous and good. The few I've known well spiralled into increasingly unhappy lives as their anger became the only way they could socialize.
Anger prevents you from thinking clearly. That's why people who crave power like to make others angry. It's also why you should be deeply skeptical of anyone promoting anger or hate as a solution to anything.