Because google search and llm teams are different, with different incentives. Search is the cash cow they keep squeezing for more cash at the expense of good quality since at least 2018, as revealed in court documents showing they did that on purpose to keep people searching more to have more ads and more revenue. Google AI embedded in search has the same goals, keep you clicking on ads… my guess would be Gemini doesn’t have any of the bad part of enshitification yet… but it will come. If you think hallucinations are bad now, just you wait until tech companies start tuning them up on purpose to get you to make more prompts so they can inject more ads!