In the sense of existence, sure. But it's pretty clear that one side has gone far, far further down the conspiracy hole. Can you think of anything in the dem side as widespread as, say, the ivermectin+antivax crap was?

This stuff isn't new, either, but the scale of it is. A major wing of the Republican party is effectively the John Birch Society, who were nuts mostly kept at arms length in a previous generation. And that's seemingly the way that many Republican voters want their party to behave.