There's more to this story.
Mazda actually includes wireless carplay in the '21 models (CX5 and CX9) here in Canada...but it's because we didn't get the new Mazda Connect system that is in the 2019 and up 3's. So they've added the feature to the ancient old Mazda Connect system, which seem so strange...but alas, dems the breaks.
Wireless Carplay sounded neat but not a big deal until I started thinking about how many lightning cables I've had to replace in the last couple years. Probably a half dozen at least. It's not a deal breaker but between that and not having the XM radio on the Touring model either is really making me have second thoughts about a 2021 CX5 this spring.