I think they are useful as long as you use them the right way.
Dig into problems, try to understand why it was solved a specific way, ask what are the con's of doing it another way, and let it know you are a learning and want to understand more of the fundamentals.
LLMs are just a tool, so try and use them to help you learn the fundamentals of the language.
It could also be argued that using StackOverflow to solve a problem doesn't help you understand a problem, and equally, just asking an LLM for answers doesn't help you understand the language.
Comments
I think they are useful as long as you use them the right way.
Dig into problems, try to understand why it was solved a specific way, ask what are the con's of doing it another way, and let it know you are a learning and want to understand more of the fundamentals.
LLMs are just a tool, so try and use them to help you learn the fundamentals of the language.
It could also be argued that using StackOverflow to solve a problem doesn't help you understand a problem, and equally, just asking an LLM for answers doesn't help you understand the language.