I feel bad for the OP for getting ghosted by the Microsoft hiring process, I'd at least want a prompt response of _some_ kind; but the package manager features OP says are "copied" are common to cocoapods, homebrew, and others... Winget is certainly not the first, and probably won't be the last package manager to take that tack, so I don't find that appeal terribly compelling (The bad hiring process though... That's annoying). If winget is a "copy" of appget, it doesn't look like a very _good_ or _complete_ one at a glance, so the author could probably keep at appget, what with the publicity; winget doesn't even uninstall or upgrade packages (yet, at least), so it's just a glorified search bar strapped to msiexec (not to lessen anyone's effort or plans, software takes a lot of time and effort to build).
If the JS package manager scene has taught me anything, it's that so long as one another's manifests/registries are readable, developers will happily try multiple programs which actually do the managing, and, to some degree, a little competition is what actually makes things gradually improve. I, at least, hadn't heard of appget prior to today. (Just chocolatey and oneget, both of which I'd used, both of which are likewise "invalidated" by winget, but persist regardless.) But I can only reasonably consider it if its primary maintainer reconsiders its "dead" status.