This implies that the algorithm identifies people who engage in leftwing politics and targets rightwing hashtags to them. I suppose that magnifies rage-engagement.
I was a (European) lefty my whole life. I lived on all continents for many years. Now back in Europe, I was shocked what the left has become. Full of bigotry and racism. I call it the “new left”.
Gladly, an increasing number of people seem to notice.