Definitely a cultural thing, but also has to do with neurodiversity; for some reason, a lot of people speak in riddles, they don't say what they mean and/or they don't mean what they say, and you're left having to make assumptions because if you don't get it, that's somehow your fault?

Another factor there is (corporate) politeness and avoiding emotional responses; the amounts of times I've had colleagues go on an angry rant / vent to us (as teammates) over a meeting they just came out of, instead of direct and use that anger during the meeting itself is a lot.