Yeah, the political spectrum is not an absolute thing. Not only is it different from country to country, it makes frequent changes with time.
For example, it used to be liberals who supported free trade. Now, it's conservatives. Another example is the fact that until the 20th Century, any populist movement was considered left-wing. If the Italian Fascist Party had been around in the Victorian era, it would've been called left-wing.
And that's not even getting into the fact that these divisions are a relatively recent thing. They only came to inplay during the French Revolution. Try to name the political ideology of, say, Thomas Jefferson, and you'd probably be stumped.
In other words, the political spectrum is rather inconsistent. I think it's an overrated way of describing views.