Dead Poets Society is not taking children seriously. Taking children seriously is not just being a bit kinder to the inmates, or being a tiny bit rebellious against an authoritarian system you nevertheless continue to work in, it is a different thing entirely. It is about children actually being free.
Punishment has a very high risk of destroying not only the desire, but also the ability to learn.
Instruction is usually not a very good way of learning things, because it does not address the immediate moment-by-moment concerns and questions of the learner.
The primary function of teachers is to hold innocent people against their will (in other contexts known as “imprisonment without trial”), to force them to do things they don’t want to do, to stop them doing things they do want to do, and to “train” (coerce) them to conform.
You may think you are helping your child learn when you answer your child’s burning question pedagogically, with a question, such as ‘What do you think?’ or ‘How might we find the answer to that?’, but it is more likely to annoy them so much they avoid asking you questions in future.