I'll stop short of asserting you don't, but I'm having a hard time convincing myself your reply does reflect that you get GP's point.

If I were to reframe GP's point, it would be: having to figure out how to answer a question changes you a little. Over time, it changes you a lot.

Yes, of course, there is a perspective from which a month spent in the lab to answer a question that's well-settled in the literature is ~wasted. But the GP is arguing for a utility function that optimizes for improving the questioner.

Quietly pondering the problem with the wrong information can be fruitful in this context.

(To be pragmatic, we need both of these. We'd get nowhere if we had to solve every problem and learn every lesson from first principles. But we'd also get nowhere if no one were well-prepared and motivated to solve novel problems without prior art.)