How is it a right-wing talking point? It's basically pro-science (and to be fair, the right has their anti-global-warmacists and the left has their antivax and antinuclear baseless beliefs)
Because that's how wacko some of the Far Left have become. Because some of the Far Left would like for there to be something like Lysenkoism forwarding a version of science which explicitly fits their narratives, and for this to be taught to young people. (If you look into it, they basically have a "good start.")