Also, to second your question: what the hell did happen to Windows search? I always just assumed I'd done something to break it (and honestly, could never be bothered trying to "fix" it... even after all these years), but apparently it's inherently broken.
I know very little about OS software. Could someone explain at a high-level how something as fundamental as file search can be rendered totally unusable? Doesn't windows have the best engineers in the world working on it?