In your opinion where is the line on where LLMs are useful/harmful to learning?

In my school projects I've found them super useful for working with libraries. In the past it felt like the theory I learned was pretty low impact. 80% of my time was spent learning the quirks of a library. Now it feels like I can take theory and iterate over a ton of different solutions without having to worry about learning whatever library the professor requires. Basically I'm I feel like it lets me spend more time learning the thing I want to learn rather than all the busywork around it. Would be curious to hear your thoughts. Thanks!