Depends heavily on context. If the trolling is obvious then I consider the question just part of the trolling.

When someone asks why the downvotes, as I often do (and I do this for comments that aren't even mine when I don't understand why they get downvoted) I try to give as much context as possible as to why I don't understand the comment was wrong.

Downvotes generally have two reasons: the comment is factually incorrect, or the comment comes across as rude/aggressive/inappropriate. (Sometimes a downvoted comment is both, but this is irrelevant to this explanation since you need to have at least one of the two).

So when asking I'll try to figure out first which one it is. If I don't know shit about the topic, then it's likely factually incorrect, so I start my question with, "sorry I don't know shit about this, can someone explain why the downvotes? " Etc.

The second one can be trickier since it requires social context knowledge and to interpret the tone of the message. You are more likely to get downvoted here, so when I do I brace myself for it. But I also try to explain as much as possible where my blindspot is. You can also pull it off, but you are dealing with commenters who are riled up and not thinking calmly. And there is a good chance the reason boils down to an irreconcilable difference in values, so you will still get downvoted.

Gee I didn't realize I would end up typing this much ok bye