I find those threads tend to be dominated by people who believe vaccinations are fascism, masks don't work and Fauci and Biden cooked up COVID in Hunter's meth lab, which is currently a solidly right-wing stance. Elsewhere there are commenters calling transgendered people mentally ill pedophile groomers, or homosexuality a sin and threat to human survival, claiming systemic racial and gender bias is scientifically justified, insisting that certain races and religions, or states of the Union, simply cannot coexist, still calling Biden's election stolen, worshiping the glory of war in turning soft men hard and the purity of the free market in weeding the weak and lazy out of society, and ranting about wokist CRT cultural Marxists burning the world down.
I think the bias you see here really depends on what threads you tend to read, what you tend to notice (which is probably more often than not what you disagree with,) and who shows up first to ruin them.