I have now, and I’m underwhelmed. As a test case I used a repeated failure point for Google and DDG: ‘“Apple I” keyboard’. As in, keyboards for the Apple I, which came before the Apple II. (I have some very stupid hobbies.) Major search engines overwhelmingly return Apple iWhatever keyboards, or just Apple keyboards in general, with occasional vintage or retro hardware tossed in. The handful of SearX instances I tried returned nothing.