After DuckDuckGo, Ecosia, StartPage, Qwant, and a bunch of other Bing frontends died today for a few hours, I also believe this shows how important decentralisation is. They all refused to build their own indices and instead feed Bing with data.
The only real effort I've seen at decentralised search has been YaCy, and that's been one single maintainer it seems. Nobody seems to care about it enough to contribute. All these new "privacy respecting search engines" are just Bing proxies that are trying to fill a demand for the market segment of anti-google people by doing the minimum amount of work possible. They could all be contributing to YaCy or an alternative. This recent incident won't convince them otherwise.