Sounds like the ancient Greeks or scholastic philosophers...
But I agree social media has also made this dynamic more pervasive as well as distorted it in many ways
I don't see how you can make this claim. Putting aside the fact that these two groups were diverse, contrarian they were not. (Socrates, known for posing questions to fellow Athenians and his students, wasn't a contrarian. He was interested in arriving at the truth and challenging the Sophists, the quintessential bullshitters, who were interested in power.)
If anything, modernism tends to be more contrarian, and even when not by intention, then at least by construction. Think of the philosophical positions that fall under this label. Skeptical denial and making weird assumptions is sort of characteristic.
https://youtu.be/C8ucJ29O1kM?feature=shared
I have watched that lecture 6 months ago and I haven’t been able to read any forum, HN included, without being reminded of Rousseau’s discourse. The Internet and social media is a cacophony of skeptics and big brains that, if you were to tell water is wet, would earnestly open a debate on why that is not the case. It’s endless churning around the obvious, as everyone’s opinion is valid however idiotic and off-topic it is, there’s no foundation to build an intelligent argument before Johnny Anonymous comes to sidetrack it either with intentional trolling or just pedantic nonsense.