I think a better critique is that these cold-war political basis vectors don't adequately describe today's political landscape (and neither do the revolution-era idea of the left wing vs the right wing; arguably they didn't back in 1950 either).
Best example of how the communist/fascist/liberal democracy triad completely falls is looking at China, which has facets of all three and none at the same time.
This makes it difficult nigh on impossible to have a real political discussion, as they fail to amount to more than connotative terms to be applied to outgroups, and do not map to political reality in any meaningful sense. Anyone can turn into the fuzzy outline of a nazi if you squint really hard.
Nuances needed to make any sort of sense of 21st century politics, especially its newer entries, are the tensions between cosmopolitarianism vs communitarianism and technocracy vs populism.
The problem with using such an outdated political map is that many of our contemporary problems are missing from it, and go unresolved until enough frustration builds that there is an ill-conceived popular upheaval that forces the issue. Rather than addressing the technocratic European Union's lack of accountability to its citizens, we get Brexit instead, which could likely have been avoided if the political map wasn't so out of touch.
American politics at this point is practically defined by being afraid of the other group. The groups themselves have little cohesion, and contain bitter rivals, but they trust each other more than their hated enemies.
Which becomes self-reinforcing: attempting to save yourself is perceived by the other as oppression.
I don't mean to simply blame all sides here. Facts on the ground do exist.I think I can justify how some players are worse than others, and that there might be a way out of the vicious cycle when some individuals say "no, that assertion no longer seems reasonable."
But given that it's gotten monotonically worse for decades, I don't see that happening any time soon.
One side is banning everything related to the other side and concentrating them in camps. The other side... is doing basically nothing, even when it's in power. I guess they gave a couple of bribes to Ukrainian-American businessmen but that was about it.
I'm pretty sure they're not the same.