I think I'm observing senior and voting folks being a tad bit lazy on their close reasons. In fairness to some of the folks, it can be very difficult to find the proper duplicate as @Robert Harvey showed when he tracked down the duplicate for The operator -> in c++ at C++: Using Arrow Member Operator.
I don't want to ignite a mini-flame-war on these comments, but I think the "lazy closer" should be addressed. I think it should be addressed for two reasons.
First, I think the practice sends a bad signal to users, especially the new users of the site. Its bad because the user is not getting useful feedback. Second, folks who close after the initial close vote sometimes "jump on the band wagon" and select the same non-relevant reason. I call this "hunting in packs".
In both cases, I think Could we please be a bit nicer to new users? discusses some of the concerns and surely applies for some of these questions.
Is it appropriate to flag the "possible duplicate of" comment that was created with the close vote?