Possibly, but look at modern times. It takes years to build social constructs that might guide us towards cooperation and non-violence. Yet, those can be overturned in an instant by a slick turn of phrase that appeals to our base instincts/caveman brain, which i believe we all have.
I have given this more thought, but too late to edit. I would like to add a very important specific fact of the modern day.
Thanks to the Balkanization of our media landscape, and social media targetting: "a slick turn of phrase that appeals to our base instincts/caveman brain" can be tailored just for you. It has never been easier to make us behave in crazy ways.
I genuinely believe that the existing incarnation of "social media" could lead to the death of billions of humans.
Yes, I think you're overall right on your description of what is happening, but I disagree somehow with your analysis. My reading of that is that social media 'accelerate' culture, and some of it is towards hateful, violent way. It's not that we come 'back' to animal instincts, it's that some new, emergent cultures push towards violence.
To your other point, I have a friend who thinks social media and online porn drive fetishism, and that fetishism drive a lot of the new 'illiterate' political movements. I don't think I totally agree with him on the illiterate part (I mean, Renaud Camus certainly managed to read Maurras before paraphrasing him, in an objectively worse way, sure, but still), but I have trouble arguing against his other points. He also thinks that this fetishism taken too far will push people towards a death cult, and kill millions