Generally, the only people we see here are those more intrepid individuals that take on the added chores of setting their PCs up differently than the manufacturers (both OEMs and MS) wish they would. Those people who wish to try new things or set up dual boots, or "play" with new OSs, etc. These are the people who frequent these forums. The "average Joe" most likely does not come here, and most probably does not know we exist.
Those individuals who do come here start as raw beginners in this exciting new endeavor, customizing their PCs and trying new things. I believe that slowly these individuals see how we give advice, and in many cases how we get the information we give and learn from that so that the next time they may spend more time investigating before posting.
Unfortunately every couple of months we see a new group of individuals that are starting as those raw beginners and so we go through the same process again.
In my case I am just beginning to learn about UEFI and GPT because I do not have one of these new PCs. As is the case with this question, I do not have the answer at the tip of my tongue, but as I learn more about UEFI I will be better able to answer questions without referring to a web site. In this case however, many of the sites we refer to explain things far better than a short post in a thread, hence the referral to a separate web site.
No one coming here for advice should take offense to this as it is a process we all go through as much as the posters.