To answer the question I think it's possibly the attitude of the community, for example a comment I saw that reads:
We speak English here, not whatever dialect of Gibberish you are using.
As if everyone on the internet speaks English as a first language.
It could also be that there's no penalty for downvoting questions, only answers. So, if I don't like a particular question, I can downvote it without penalty to my reputation. That being said, if the question is salvageable, it should be edited or commented for clarification for current and future users of the site, as is the SE spirit.
I don't think this question or this one is necessarily bad, questions like that are asked on SuperUser, and in particular to this site's faq I believe falls under the category of:
However, if your motivation is “I would like others to explain ______ to me”, then you are probably OK.
You should only ask practical, answerable questions based on actual problems that you face.
I will agree that the latter of those two questions should be edited for a better fit on the site, but I wouldn't say they it would be far from this question with a little help.
I completely get when people ask bad questions where it's impossible to understand what they want, but (in reference to questions similar to my first two example questions) there are some questions where the answer should include at least a basic explanation of principles involved, whether the user asked for them or not, as that is part of what makes a good answer (another is actually answering the question). For example, If it's
1)hard to determine a parts list without more information or
2)can't be determined at all,
then that's what 1)comments are for and 2)should be included in the answer(s). In my profession I frequently run into people who 'think' they know what they want, as I'm sure happens in many technical fields. This site is no different, if someone wants to know something, they may really want to know something else or the theory behind that something as well. Even if they don't, including the theory/background can make the question better on the site long term.
My answer is not in reference to obviously terrible questions like this, but questions in the grey area, which I believe is what the OP is referring to.
Would anyone disagree that questions asked on this site should fit the following format (for EE and not programming of course)?
Bottom line is, some people coming to the site don't know much about EE or the site, but need help, and as members of a community we should help them when able.