Text search is fundamentally a deterministic problem, and squeezing it through a heavy non-deterministic, stochastic engine -- especially through a CoT LLM -- is inefficient from a first-principles algorithm design pov. Also, Google did great search before AI overviews using probabilistic linking and knowledge graphs.
I've been using DuckDuckGo's NoAI version as a fallback, and I've had great results so far; brings me back to the web I remembered growing up -- personal blogs, random forum discussions, and whatnot -- with just a fraction of the page bloat.
I say all this as a HUGE fan of Gemini, Gemma, and Antigravity.
This isn't Google search diminishing; Google is serving more search results this year. This is their other ventures catching up to their oldest one.