I'm really not talking about authoritarianism though. I'm talking about aggressive leftist policies that although have good intentions don't manifest in the ways naive progressives think they will. It's not sensible to think that everything is racism and oppression. Yes, there's definitely a component of that but i'd have to argue that it's not as strong as some make it out to be.
And on your point of social safety nets. I definitely believe in it, no question. However, if you come to certain latin american countries and see how fast the underprivileged will mobilize in a location, take up prime real estate, and then refuse to pay for basic utilities and electricity while continuing to reproduce at alarming rates... it's mind boggling.
Who foots the bill for this electricity? The societies middle class that ends up with astronomical electricity and utility bills. Some will then come out and say "well, you don't provide the proper means for abortion and population control" right because you'll get corrupt wide eyed politicians coming in targeting these population sections for votes. And in a country like Brazil where voting is mandatory... you get the idea.
Then what are you talking about? Because you seem to be all over the map and not making much of a coherent argument other than "I identify X thing I don't like as a left-wing issue, therefore I am going to broad brush and correct for that by blindly throwing my lot into the conservative wing without any similar scrutinizing process."
Because as people have pointed out numerous times already, and America itself validates that viewpoint as well, plenty of left-wing ideas as you would seem to classify them are a major reason for the ongoing economic stability and opportunities almost all of the western world benefits from. Corruption and perversion of ideals that lead to failed states or unintended consequences aren't really unique to one broad ideological bloc.
If you are talking about things like actual Communism or Marxist-Leninism, yeah, its not been a very workable way to organize a society based on the evidence, neither has libertarianism through military dictatorship, or gilded-age style capitalism. But centrism as America would define it, seems to be advocacy for a form of stasis in what by most accounts have been failed or broken policies in terms of economic regulations, social safety nets, social justice, political institutional decay, criminal justice, and environmental problems. And I guess in my mind I am struggling to see how a John Kasich or some American centrist that is continually shifting thanks to an increasingly authoritarian conservative party is the answer to those issues?