Unfortunately, you are correct. I genuinely try to bring a rational, calm, fact oriented dialog about leftist ideas (decommodification of housing, trans regret rates, social and anthropological science/history around queer issues, systemic inequality, etc.) and largely the conversations I have get one great, engaged response and a whole lot of flames.
I had a fantastic discussion about the history of socialism on the African continent here, with one strongly anti-socialist person. And we both had to slap away people who just wanted to dunk on the "other team". It's unfortunate, really.