As a kid I had windows 98 (and later xp) dual booted with debian and at some point some version of suse. This was ~20 years ago
Well I used it just fine and I knew a bout the mysterious “root” and “sudo” that my dad would use but I was just playing some games and maybe using the web browser.
Using the GUI I never learned Linux and it wasn’t until a few years ago that I started using Linux again, and it was only because I wouldn’t be able to continue using Windows 7 anymore.
So I don’t have any experience with teaching Linux and especially not to kids, but I think kids are actually really good at learning stuff if they need too, so give them a PC and the tools to figure things out, if they want to use it they’ve got to learn, and don’t give them other options where they don’t have to learn anything.