Getting kind of tired of this Europe vs US trope. Europe is a huge place with each country having a rather unique economy, making a blanket statement like you just did entirely ignores that, and where does this constant need to compare one place on the planet with another place comes from? I don't live my life comparing everything about my country with another country, do you? Development trends themselves tend to also be cyclical.

As for LLM's, from what I see the languages that LLM's are most often used for are those with the lower barrier to entry / and those that UNI's and bootcamps teach, which would very much also include Java. However, what I see is actually my salary going up as the average candidate quality has been also decreasing, almost in correlation with the usage of LLM's. So while maybe the junior/mid-level salary goes down, the senior salary, in my observations, has not. And I keep hearing from companies how finding actually capable developers has become harder and harder, so I expect my salary to only go up.

Now, of course, being a one trick pony has never been a good thing, I agree on that (did you assume that I'm a just JS dev?), but I was just answering to your original comment.