Unless they make this thing essentially bezelless, it's gonna be huge! That could bode well for clocks/thermals/battery capacity, or it could allow them to use silicon based on an old chunky process, hopefully the former.
If it is as big as the screen size implies (if indeed this report proves true), then maybe they're targetting adults first, then will follow up with a smaller, kid-hand-friendly version down the line (when they can shrink the internals with a future node switch).
Guessing adults are the more lucrative market so would make sense to go for that segment first, as they're gonna sell out for the first couple of years anyway.