I mean, as long as you know what AI is and what it can or can’t do, there isn’t much risk. But it seems the issue here is not “can AI be useful for language learning” but is more “do people know how to use AI correctly in language learning” because the answer to the first question is yes. But if you’re not going to use it right, then yes, it is probably better that you don’t use it.
I think there is a lot of general hate towards AI bleeding in here, some of it valid, some of it not so much. AI is a tool. It’s an increasingly improving tool, at a pretty insane rate. There is value in learning how to use it, and knowing what applications are well-suited to LLM’s and what are not well-suited to it. Asking for it to shoot out high quantities of things you are not capable of fact-checking is not one of the applications that I’d advise using it in.
If you don’t like AI/LLM’s, or you don’t want to learn how to use AI effectively, then its best to avoid it in language learning. But that decision is entirely separate from whether AI can be used to greatly help you in learning a language.