Should someone have told the guy (Adapting light fixture) why he could not do it. or maybe direct him to a site that would answer his question. Sort of rude, to have locked his subject, don't you think...
I answered the Q in what I considered to be the safest response for him. His plan was loaded with safety hazards and Code violations. Any answer trying to correct it could be taken out of context as an OK to go ahead with another part, whereas the whole idea should be abandoned. He needs to seek the help (not just the advice) of a professional.
Rude would be to help him burn down his house by helping him carry out his idea!
There is another board that I frequent that is also for people in the trade & it is clearly stated as such before you can reach the bulletin board. On that board, amateur quaestions, when detected as such, are usually ignored & once in a great while semi-flamed.
I've got nothing against amateurs doing their own work & seeking advice in the proper forum. I also visit a board aimed at amatuers. After all, most of them will proceed regardless of how well informed they are & I'd like to see them armed with some sound advice.
Few things are harder to put up with than the annoyance of a good example.