I'm not saying infodumping is okay. What I'm saying is if a newbie comes along and asks questions, how about answering them so they know WHY it's not a good idea, instead of just saying, "Just write." Well, that's what they did, before they came along and was told all the wrong stuff they did. How about explaining things to them? It's really unhelpful to tell them something vague when they need something concrete so they know HOW to fix their work.
I see both sides of this. I'm absolutely pro people explaining to newbies why a certain "rule" is so and helping them understand it so that they can decide how to deal with it in their writing. But some new authors won't write until they've asked a question about every element of their novel they can think of. And when they learn something, they ask about some aspect of it. And then they ask if this is okay. And then they go to a different forum to see if there's a different opinion there.... Or they never get off the first chapter because they're constantly being told what to revise on it and never get around to writing the novel, which is a different skill than writing just a first chapter. So there's a balance to be had.
This is sort of a different issue from the OP's "Stop worrying about what 'the reader needs to know,' and write a damn story." though I see how you got here from this thread.