Question

I hope I can explain my question clearly.
Usually, when people tell someone that his view is “extreme” in order to dismiss it, that is just labeling instead of making an argument. But lately I came across someone who really does seem to be “extreme.” He takes everything so far, in such a simplistic way, and so on. You can always tell in advance what his opinion will be—one step beyond everyone else. He is always focused on what is desirable rather than what actually exists. Almost a denial of reality. In short, his approach is consistently extreme.
Can one say that this person really is “extreme,” and therefore he himself ought to reexamine his approach? That is, in this context, dismissing his opinion as “extreme” would not count as a straw-man rejection.
Or should we say that there is no problem with “extremism” at all, and that this is a reasonable way to look at the world?
 
Thank you