Sure, which lends weight to the idea that the shell should be a more extensive programming language. Then you can pass an arbitrary Predicate<File> to the finder (which would likely just be a convenience function of about 5-20 lines), and receive a list of file objects for you to do what you want with

That's the direction Powershell took, and to some extent was what other OSes were doing at the time of Unix. But Unix has become so ubiquitous and influential that we've forgotten that programs could pass more than ill-specified strings around, and that resources could implement richer interfaces rather than trying to force the file IO interface on every single one, regardless of how little sense that makes

Worse is Better may have been a useful expedience in the 20th century, but we're long overdue repaying that technical dept, to get back some of the rich OS/environment features that other camps had got working almost half a century ago. The first step would be to stop putting "Unix philosophy" on a throne