My personal experience is that the setup procedure wildly depends on the phone's vendor.

The biggest difference between setting up a Pixel and an iPhone I experienced was that Google asked for certain settings beforehand that I had to turn off in the settings after setup on iOS. Both would've been a lot faster if I hadn't tried to disable optional account stuff.

Contrast that to Samsung, especially their non-flagship models, where the setup wizard took forever because of the crap Samsung added to the process.

That said, I do appreciate some "tutorial" parts of the setup process on Android. When I first set up an iPhone, I got the distinct impression that Apple assumed I already knew how to do everything. Their interface isn't exactly intuitive if you haven't used iOS before, no matter what online forums may claim. It took me several tries and a Google search to figure out how to remove apps, for instance. Perhaps one might find it an annoying extra step you're going to skip as a power user who's used to the platform, but it felt strange to be dropped into a strange, new operating environment with no instructions.