There are a few pieces out there about this "horse shoe theory" where the extreme left and the extreme right wack jobs are in agreement on this one.
Not just this issue, but it's a viable theory. They both hate the western multicultural globalist capitalist liberal consensus, but for different reasons. Both ultimately agree the power of the state should be wielded for ideological reasons, so they also share a skepticism towards free speech and adopt a machivellian approach to cronyism. "Bernie was robbed by a party elite conspiracy" is the functional equivalent of claiming the 2020 election was rigged.