I agree. It also filters out all those people who didn't put in effort and want to use you as their personal "Google".

I love to help people. I esp. appreciate the ones that up front tell me what they already did and tried. I had a great colleague once - I loved to help her, because I always knew that she came to me, when she was truly stuck and did not know what to do after trying everything that she could think of.

And she was able to succinctly tell what she did so that I was able to narrow down potential causes/solutions quite efficiently.

Contrast that with another former colleague who when getting stuck alawys came to me first thing to ask me, if he could just ask a short question. Even in moments when I was clearly deep in concentration and clearly signaling that state. It was always urgent and he never put in any effort to solve the problem himself first.