I've seen this problem many times on this site, but the most recent question, which also incentivized me to write this meta post, is Do effects that activate on a critical hit still activate when the hit is against an opponent wearing adamantine armor?.
It might actually be one of the more valid questions of this kind, but the basic issue is still there in my opinion: someone poses a question that has a simple and straightforward answer, which requires quoting no more than 2-3 non-hidden, straightforward paragraphs to answer. That being said, I have to admit I may have asked such questions myself in the past, but that doesn't make the issue any less relevant.
In the question referenced above it's basically: a) here's adamantine armor, which turns crits into normal hits, and b) here's a feature that activates on crits. Does the feature still get triggered?
The question already includes a quote of the feature b (in this case Great Weapon Master), and the answer basically only adds a quote of the description of adamantine armor, wrapped in an elaborate explanation of the straightforward interpretation. I don't mean to criticize the answer here, there's not really any room for improvement imho.
What bugs me is that this question is answerable by looking at 2 (!) paragraphs in the source books, one for the feat (which OP already quoted) and one for the armor, which I expect OP to have read through if he or she is asking a question about it.
How should we handle this type of question? Since there don't seem to be any close votes, other people don't appear to have noticed a problem with it. Personally, I'm not sure whether it should be closed, and if so, with which closing reason - the existing ones don't really fit, except for "a community-specific reason", which doesn't seem to have been defined yet.
The reason why I think such questions should be closed is that they show either barely any research effort (which is not the case here, OP referenced another question about adamantine armor that doesn't answer this question) or they're sort of a "the books say X, but DO THEY REALLY???" question, where the OP already knows the answer but is hoping for a different one.