I think the big deciding factor is how they're approaching the questions and what the questions are. Like, if someone is "just asking questions" where the questions just so happen to be a common bad faith talking point, yeah, I'm gonna assume they're also acting in bad faith.

Eg, leading questions are a particularly common example here. The amount of lean towards their already-decided viewpoint can vary. They might word their question to be convinced away from their viewpoint as the default ("why isn't the moon landing fake?"), or maybe they'll provide a statement that obviously gives more weight to their side ("the government is so untrustworthy, so how can we trust the moon landing was real?").

But often, they even do word the questions in a perfectly valid way, because they're not trying to get an answer. They're not gonna be convinced and they're trying to get an answer. What they want to do is make someone else mistake being stumped for "this person might be right". Eg, if someone asks you "is the moon landing real?" and you don't actually know how to prove that it's real, that can make you think that perhaps it wasn't real. After all, you can't explain how it is. But that's a fallacy. You not being able to explain it has nothing to do with whether or not it's real. Asking questions is cheap and easy. It takes no time investment compared to answering or understanding an answer. That makes it effective for planting seeds of doubt. And of course, people should think critically, but many folks aren't going to or aren't don't have the time. So they'll retain this low effort seed of doubt and that's it.

Plus of course, searching for these questions, especially leading ones, can get you to fall into conspiracy theory or alt right echo chambers, which will have the leading question included in multiple times and technically is a better match from a pure SEO point of view. Search engines do try and train themselves against the common leading questions, but they often have to do that explicitly. This is actually an area where search engines like DuckDuckGo do worse at. You're more likely to have a leading question in the top results because, again, it really is the most accurate match for that question. Should search engines direct you to the correct results or should they direct you to the results that are most accurate for what you searched for? Nobody really agrees and it'll be criticized either way (personally, I think that correctness is far more important because otherwise the search engines propagates misinformation).