That's nonsense too, the political spectrum is not a circle. Read Erik Von Kuehnelt-Leddihin's Leftism Revisited for some clarity.
Just sayin'...
There are different paths.. different viewpoints..
The Exact center of this revised "Nolan chart" is total Anarchy...
I can easily envision a "chart", circular in nature, that places anarchy at point 0 degrees.. in which different degrees of freedom and control result in a merging at the 180 degree mark.. which is a Totalitarian government..
Whether one reaches that point through democratic liberalism to socialism to Communism, or from conservatism to authoritarianism to fascism, is irrelevent..
The end result is the same..
Total control, Zero Freedom...