The only time I asked a question on stack overflow I took a very long time crafting it, and was immediately closed as a "duplicate" of something that it clearly wasn't a duplicate of. Tried explaining how it wasn't a duplicate and got closed again. Never bothered trying to ask a question there again. The amount of effort I had put into being a good asker was completely wasted on someone who seemingly didn't even read my query before eagerly shutting it down.
Sometimes you'd get banned for asking an exact duplicate of a previous question of yours that was closed. They'd tell you to edit the closed question and it would be reopened.
But if you'd edited the closed question instead, it wouldn't be reopened.