I think Peterson said white privilege is not real. Also he says women aren't discriminated in the job place they way feminists try to get you to believe.
I think just based on these two thoughts many call him a nazi.
Also he refuses to call trans people by their prrferred identity.
This isn't true. He refuses to use compelled language by law, and will call a transman a man and vice versa. He said he is hesitant on the 2 million other genders, thinks it is mostly just leftist identity politics(pretty much is), but hasn't even run into that situation if I remember right.