Why? It's going to be my kids first computer.
Computers today are so absolutely hostile as they are simply attention-sucking sale-terminals. They spend all their time popping up unwanted notifications which are just advertising.
And the interface of modern devices is actually horrible for learning. Some stuff may be intuitive, but the biggest issue is that every slight movement, accidental tap or gesture is linked to something so for kids it's too easy to do something that exits the current program or bring up some sidebar. It's impossible even for me to connect "what did I just do?" with the sudden change in context. It makes it really hard to connect cause and effect. And don't even get me started on how dangerous apps like YouTube are for kids. The recommendation algo seems to surface click-farm scam content in no time. Or weird dopamine traps.
So my kids will start with a device that isn't constantly trying to sell things, they will learn to understand simple systems which has deterministic behavior.
Not to sound overly flippant about it, but that sounds like a "him" problem, not a phone problem? He clearly doesn't see it that way. Instead he's decided that his inability to personally cultivate a healthy relationship to current technology represents a flaw in the technology itself, so we should regress it. Kind of, "Am I so out of touch? No, it's the children who are wrong." vibes.
I'm not a father, so I can't speak with authority, but it seems to me the appropriate approach (given technology's advances will not stop) is to nurture the skills in children that help them navigate the waters, not to drain the sea.
I stopped watching after he kept "tearing up" when loading a computer. After a few times it seemed totally fake