I meannnnnn…

Pedantically, the “stolen valor” metaphor absolutely doesn’t fit here; you’re just griping about the “sudo brand” being used in another project’s title (which … citation needed, and so what? Is “doas” not committing theft but “sudo-improved” is?)

More generally, that’s an easy case to make against any software you don’t like: “it’s just reimplementing $whatever and trying to pretend to be the original therefore it’s unethical”. Some rewrites are good, and a huge benefit of the act of rewriting is that you do have a clear blueprint and understanding of the requirements (hell, Linux was a rewrite). Should the original creators of a thing be the only people who can ethically rewrite it? Where’s the line here?