Exactly this. Scrolling through the customisation feature list, I just see "more work", "more work", "more work" - and it's not super clear how doing all this extra work is going to help me. And I'm in the target audience for a "technical" search engine; this is a total non-starter for the 99.999% of the world we call "normal people".

The useful ideas in here is the "just my data" search, linking into external providers across siloes. Of course, Microsoft, Google & Apple already have this as long as all of your data is held in their ecosystem.