The Fascists (the real ones, in Italy), the NAZIs, and the Bolsheviks/Soviets were all authoritarian extremists.
I definitely wouldn't completely agree with the graph below, because like everyone else they try to lump the national socialists over with the "right", but it gives you an idea how the problem of one dimensional thinking ruins political discussions and causes a lot of people to lump groups and ideologies together that have very little in common.
In this case, the pertinent point is that fascism, communism, and socialism tend to either be an excuse for totalitarianism, or they end up having to resort to extreme oppression in order to force compliance with the system.
I have never seen that before, and I agree it has some value. But the “Modern Conservatism” > “Nazism” is simply the result of the Leftist value setting.
The caveat is how you define “Modern Conservatism”.
I don’t define “Modern Conservatism” as “RINO” because those are all, IMO, Leftists.
And if “Modern Conservatism” is defined as those who believe in the Constitution, it simply CANNOT drive them down the “Left” side of that graphic. (and certainly cannot drive them down the “Right” side to Nazism)
A Republic guided by the Rule of Law and respect for the individual CANNOT descend to “Tyranny” if that is how “Modern Conservatism” is defined, because in that case, “Modern Conservatism” is wholly incompatible with “Tyranny”.
That said, I did find the graphic thought provoking, so...I appreciate your posting it.