> Search quality worsened over time
They just rehash the SERPs from actual engines. So if quality declines in whatever SERPs they scrape (or they lose access to a quality one), so too it will on kagi.
They have their own indexes.
https://help.kagi.com/kagi/search-details/search-sources.htm...
Also, I felt Kagi had too many projects going on. Their whimsical engineer-daycare-esque blogposts did not inspire confidence.