Paru was at one point a rewrite of yay in Rust, and has since continued development as a pseudo parallel fork. It’s good. Dunno if it’s worth switching, you’d have to see if there’s any specific features you might happen to want, but they’re both fine
But something has to be written on the birth certificate and social security card, and that’s what everything else will expect you to use. I think just due to technical limitations (e.g. of the printer/template for those things) it wouldn’t be allowed, but I dunno about legally