I Hope For A Good Faith Effort, For Which There Is No Acid Test
The headline really sums it up for me: I hope the querents are making good faith efforts to answer their own questions before coming here, but there is nothing other than a personal gut check on my part to estimate if that good faith effort has been met.
Why? At the very least, we have a very high variation in expertise among our querents. Some folks have been playing RPGs for a decade or more, have a problem that vexes them, and they might stumble across us as part of their own good faith research (which in that case might be "a Google search.") Others might be extremely new to the hobby and trying to figure out a complicated game like D&D 5e or Pathfinder 2e. We also have wide variations in language skills, and wide variations in age and maturity. So just on those bases the level of "good faith" is going to vary widely with the askers.
I also prefer strongly to err on the side of caution. I don't post questions on this stack, but I do on others, and I know my level of "research effort" varies from question to question, depending on how urgently I need an answer, and what my own level of knowledge is. In retrospect, I've asked some howlingly stupid questions in my time, but always in good faith-- sometimes when you're flailing, you know you're flailing. But from outside my head, there's no real evidence of research because I was just that confused.
So I have sympathy for people asking questions that are right there in the rulebook because they lack the expertise to get to the right section, or they gave up just five minutes too soon.
(And as a side note, I've asked some really broad and stupid questions because of my ignorance, and I've asked some really technically astute details-digging questions because I was a frustrated expert or advanced amateur. I can't say I've noticed much of difference, as to which get more enthusiastic answers.)
If anything, I might even state my position just a little more weakly: Don't ask questions in bad faith. Again, that's a subjective gut check, and they tend to reveal themselves after multiple questions: Don't ask a string of questions trying to guide me to the answer you want. Don't ask repeated questions about (say) how some spell works when they can all be answered by the rule book. Don't ask repeated questions asking me to find some rule for you. Don't ask me to read the book for you, etc.
I firmly believe this cannot be articulated in a policy, or boiled down to a checklist, or distilled into pithy wisdom. This is a matter of individual judgment, conscience, up/downvotes, and if necessary close-votes.