I believe, that when people learn programming mainly from LLMs, they will navigate themselves into a corner faster than with regular learning. i.e. they learn anti-patters and won't be able to get out of they local optimum.
On the other hand: that's happening today already en masse, so I am not sure if it can actually get worse.
I agree, that LLMs as an addition to the established resources (teachers, books, youtubers, etc.) will have lots of value.
Interestingly this assumes that the goal is learning how to manually write code, rather than learning how to get a LLM to generate code for you, or learning how to build a product.
If you believe the future of coding sits in AI/LLMs/ML, this next generation of learners might just be using the 'beta' tools-of-tomorrow, rather than just being people that need to learn to manually code.
(My personal view is that manual coding will be changed almost unrecognisably within 5-10 years, but lets see! So much of learning to program is about learning syntax, and I can see a world of AI-powered-future-programming-languages where syntax is less important than clarity)
On the other hand: that's happening today already en masse, so I am not sure if it can actually get worse.
I agree, that LLMs as an addition to the established resources (teachers, books, youtubers, etc.) will have lots of value.