Excellent question and I appreciate that you've approached this problem professionally.
T.E.D proposes that we imagine a math stack question beginning, "It is commonly known that 1=0" - which is an excellent thought experiment. Today I re-encountered a question that is perhaps a better illustration.
How and when was Portugal created?
As I said in my comments, this question is really frustrating because the original poster asserted that he did research and consulted wikipedia, but didn't get an answer. He didn't provide any links, so we don't know if he consulted the English wikipedia page on Portugal or some other page. So if I want to try to answer this, I have to start by repeating his research.
Then I have to figure out why there is confusion - when I do a google search on the foundation of Portugal, I get a clear unambiguous answer. So why is there a problem? For every other country there is a clear foundation date. Why is Portugal unique? Why didn't OP's research resolve the question? I don't know because OP didn't share that information with me.
I gave up - I'm not going to answer that question because I don't want to fight up that hill to understand the question before I find the answer.
History is unusual (perhaps unique) because we are about research. There is a common body of math facts that are accepted and documented, and a common body of procedures that transform those facts to new facts. In the Project Management Stack exchange there is a Project Management Body of Knowledge (and a few other canonical references) - we can all refer to the same body of knowledge.
But history is about assembling a narrative from a set of sources. It is vital to know what sources are being consulted. It is critical to know what assumptions the question is making. Many of our very good questions clarify assumptions -for example the recent question about guards wearing plate mail assumes that during the period in question there are guards and they wear armor. I think both of those assumptions are wrong. That person will never get a good answer from wikipedia or google because they are searching with flawed assumptions.
You are 100% correct that it is difficult to get a question into this stack and you are (unfortunately) also correct that we could be more welcoming.
My repeated resolutions to be nicer and more welcoming are strained by questions like this