Windows 10 already had search by starting to type anything you want.
It works fine. Over the last few years I already found myself just not adding shortcuts to its start menu anymore. The shortcuts themselves would deprecate more often than not (you play a game, you finish it, you leave shortcuts on the menu, but game was already deleted, that kind of stuff) and then you'd have a menu full of random junk you don't use in front of you. Today? Even prior to moving to 11, I already had genuinely just 'started typing' after hitting start, often not even clicking the start menu button but rather hitting the WIN key. Its a complete keyboard workflow, and it works genuinely great.
Things like the snipping tool. hit WIN, type 'snip', hit ENTER, click whatever kind of screenshot option you want, Ctrl+C it and Ctrl+V it on TPU. Its fantastic. Even at work, if I have to make a 'how to' document, its a super basic and simple way to get screenshots in there, that works seamlessly with other applications, whatever they are.
Start a recording session on my DJ gear... hit WIN, type 'rek', hit ENTER. (Rekordbox starts up). Hit WIN again, type 'aud', hit enter again (Audacity starts up). All that's left to do is select track and hit record in audacity.
For games it is no different. Three to four letters and enter. You're in. Even just looking for the right icon in the menu feels like busywork compared to that, honestly.
Yesterday I needed to disable core isolation. You could start clicking past several menus and find it yourself in config menu. But I just typed 'core iso' and hit enter. Never went there before in my life. Took all of two seconds. It even found that same menu with the same prompt despite the OS being in Dutch (and the words nothing alike).
"Search" a.k.a. "Find" is what people do when they don't know where something is and not kwnowing seems to be the normal state for most windows users. Then you have users who know there are a number of "cleaner" applications freely available to clean traces of old applications with bad uninstallers so they don't have to do it manually or that they can assign "Shortcut keys" to launch .lnk files and use WIN+SHIFT+S to launch the snipping tool without having to open the start menu and type "snip".
There are a million blog posts and Youtube videos that will teach someone how to use Windows more effectively, but they have to go and search for them and that is too much work for most users. It's not that they lack curiosity but their curiosity is forcibly directed towards the last trendy thing or celebrity scandal or something like that followed by an ad about some product or other. Plus MS is not interested in people knowing because when you know you don't search and therefore don't contribute to AI training or ad profiling.
Personally, I'd smack myself hard in the head if I hadn't learned at least some ways to take advantage of an OS I've been using almost every single day for the better part of 3 decades.