My guess is they spend less than 60 seconds on it, in the same way they talked about it when it came to the iPad Pro in 2018: https://m.youtube.com/watch?v=bfHEnw6Rm-4&t=3309
In summary: “We changed a thing. It’s a big deal but also not. Here are three benefits this change brings for users. Also this other benefit. On to the next thing.”