I don't think it's a shocking observation political hostility on all sides is often a strategy for self-care in the form of hostility catharsis.
Along these lines, if Facebook, Twitter, etc. were sincerely interested in improving online discourse, they would jettison "fact checking" and censorship for additional content that focuses on the safety of the present moment, temporal perspective, breathing, visualization, humor & timeouts.
Every one of those interventions are proven to work in many cases, do no harm, allow the free flow of ideas and where effective open doors for bridge building.
Yeah, seems hokey... until you actually try these strategies and discover they provide tremendous relief.
Study abstract: https://psycnet.apa.org/record/1963-05053-001