The real lesson here is that apple can do pretty much anything at this point and the historical users will still stay into their ecosystem (even the author who seems more and more disappointed as the years are passing admits that).

Now the younger generation is much more promising in terms of revenues and it already has an iphone so it's very logical to make macOS intuitive for ios users. Providing instant productivity is probably the most valuable thing you can do to those new users from a software perspective.