Kagi is not immune to this (it's the substrate itself that's losing quality, not just search) but it's a decent antidote.

Kagi can’t solve the fact that the internet itself has gone to shit. The independent forums are largely gone, the mainstream social media’s have all locked down and been spammed with AI slop.

A lot of the time I use Kagi to find the Reddit post or Wikipedia page I need. There isn't much else.

They only repackage what Google et all returns.

Or have they started own indexing?