AI-generated code is going to be a major influence going forward. Regardless of how you feel about its quality (I'm a pessimist myself), it's happening anyway, and it's going to cement the dominant position of those languages which LLMs understand / can write the best. Which correlates strongly to their amount in the training set, which means that Python and JavaScript in particular are here to stay now, and will likely be increasingly shoved into more and more niches - even those they aren't well-suited to - solely because LLMs can write them.