@Fernando that's interesting about the offense point. I'm not sure I've noticed that. I think what I have noticed is that as you pointed out, having design in the name is a double edged sword. On one hand, it's great because it implies that something is going to be thoughtfully crafted to be good in some way(i.e. designed). On the other hand, it implies that any designer is a design thinker which is not the case. You write, "Even if you are a designer, a good one at least, it is more than likely that you also are a design thinker."
I actually think if you are a designer, it is more than likely you are not a strong design thinker. The third core principle of design thinking in addition to collaboration and diversity which I think is the key to the whole thing is user research. Design Thinking starts with a foundation of needfinding user research which most people do wrong and then proceeds to integrate user research through experimentation and testing throughout multiple cycles of iteration. We have found that it is very rare to find a designer who does this effectively AND it's hard at first to distinguish the wheat from the chaff. When hiring people, we have to do a full test engagement with someone before we can really understand if they are strong practitioners of the design thinking process or just something they say they believe in and sorta do (but not in a very effective or thoughtful way because they either are new to it or don't totally get it). The part that I think is hardest for people to do effectively is the user research and subsequent analysis. This could be one thing that is wrong with the term Design Thinking as it doesn't imply anything about users anywhere in there.