For example: a beginner developer is possibly better served by some SEO-heavy tutorial blog post; an experienced developer would prefer results weighted towards the official docs, the project’s bug tracker and mailing list, etc. But since less technical and non-technical people vastly outnumber highly technical people, Google and Bing end up focusing on the needs of the former, at the cost of making search worse for the later.
One positive about AI: if an AI is doing the search, it likely wants the more advanced material not the more beginner-focused one. It can take more advanced material and simplify it for the benefit of less experienced users. It is (I suspect) less likely to make mistakes if you ask it to simplify the more advanced material than if you just gave it more beginner-oriented material instead. So if AI starts to replace humans as the main clients of search, that may reverse some of the pressure to “dumb it down”.