A question asking about a specific resistor value is no different from one asking about a particular approach to a project, if it demonstrates research and effort. I think that's all anyone here really expects. All technical levels are welcome, and any project level is welcome (macro or micro). The problem with questions like the monitor heads is that it comes across as:
"I just saw this really cool thing on YouTube and I want to build one. How do I do it?"
There's no demonstrated effort, no demonstrated research, just somebody looking for free advice. It's reasonable that any well formed answer would go over their head and be wasted. Someone wording a question like that would read such an answer, and think:
"Oh, I have to do stuff? Like, buy tools and learn how to use them? Nevermind!"
Further, we have no idea what the person asking is capable of. Without specifying a stumbling point, we haven't a clue what to suggest. Is the person an RF genius, but unfamiliar with video encoding? Perhaps his or her electronics knowledge is sound, but has never soldered a single pin... How are we to know?
Questions about projects (no matter how silly the project) are perfectly welcome. They just need to be formed in such a way that shows the person asking cares enough about the project (and the assistance of experts) to show it:
"I found this Widget on Youtube and would really like to build one. I've studied phase-coupled waveforms and borrowed an oscilloscope, and now I'm trying to realign the flux capacitor. It seems to always get stuck at 1.21 GW, despite my careful analysis of the load coils..."
I'm being humorous but the point is that the question shows effort. A project scope question is even okay, so long as the OP makes it clear what help they need:
"For this monitor-heads project, I've been looking at LCD monitors to use for the displays, but I can't find one that seems to be the right size or is light enough. I'm worried also about heat. Is there a suitably lightweight display that could be used as part of a mask like this?"
That's better! Now we know they've actually been reading up on displays and trying to figure out where to go next. It also focuses more on a specific problem, the selection of a display technology. Or this:
"I've selected the Samsung SMD-1000 (shoulder-mounted display) for my "monitor-head" project, but I'm having trouble getting the video signal to be clean. With a long cable going to the performer wearing it, the video is choppy and has lines and static. I'm using a 50 meter composite video cable made from Cat5 cable with soldered RCA jacks on each end. How can I improve the video quality?"
These examples are what we're looking for. I doubt it would receive as many (if any) negative votes if the question was worded more like these trivial examples.