Insist with this “make it big” theory: all Apple laptop keyboards are the same as the larger ones. The 12” PowerBooks had the same size as the 15” and 17” PowerBooks. The same happened with the keyboards of the MacBook 12” and 13”, at some point in 2012 to standardise production the Airs received the same size of the top lid as the MacBook Pro 13”, while until 2011 they were slightly smaller. Only the 11”, both iPad and MacBook Air, had smaller keyboards.
As seen so far you have your own mental form and you continue to support it.
Make it big!
I don't even know what you're arguing any more. Yes, current Apple laptop keyboards are the same. That's exactly why the 12-inch MacBook had a different one: the regular one didn't fit. Then, once it had that, they thought they could change all other laptops to have the new, smaller one, and that turned out to be one of their biggest missteps in the 2010s.