Well, the whole notion that things are on a spectrum is kind of false.

There are the people using what we know about the world right now to try to improve the conditions for all of us and who are willing to adjust course based on evidence and results, and then there are those clinging to failed notions of the past, whether it be an outdated philsophy from four hundred years ago or a failed theory from yesterday.

In that way it's more of a binary that does not care if you're anarchist, monarchist, communist, libertarian, democratic etc. If your ideas aren't working and you fail to admit they aren't working then you have become a conservative, regardless of how radical your idea was when it was concieved.