By all means propose questions on the Meta site about what we should and should not tolerate. I certainly agree that some questions are just beginners' programming questions. However the Arduino is targetted at beginners. I'm not sure how you reconcile that.

@NickGammon. "Arduino beginner" is the keyword: someone that know electricity, a bit of electronic, low-level programming (C/C++) and know want to build something.

@NickGammon. I already wrote about this in Meta, as you know. It's clear that my views are truly unpopular, so I don't see a reason to start again there.

"and now want to build something that interact with real world"