You're underestimating how obviously, laughably wrong the AI summary often is.
I really think Google is making an error using such a lightweight model for the page. That's one of my only firsthand exposures to genAI, and it's awful. Use a decent model, or if that's too expensive don't put up a summary at all.
They used to prioritize accuracy first, then speed second.
Now it's just speed. This is a grave error.