You're thinking too deeply. Simplify for "average Joe:"
- The skinnier/lighter/cheaper ones come in 13" and 15" screen sizes.
- The thicker/heavier/more expensive pro ones come in 14" and 16" screen sizes.
Average Joe will have no trouble with that. Most buyers are "Average Joe."
Average Joe may not even be aware of M2 vs. M1 (and M3), SSD in one slot or two, etc. He'll simply be shopping for "an Apple laptop," more likely than not attracted to the cheaper ones (because price rules most of the consideration) and may only really be debating 13" vs. 15" because "I'm no pro user."
Pro/Power Joe will probably ignore the Air options because they need
POWER, so they will only be considering the 14" and 16" options, loaded of course, because they need BTO maximization for "more power." Whether they actually use that full power much or not is beside the point. They'll see the Airs as relative toys.
Not so many will be thinking every model vs. every other model. Buyers will just split on price vs. "pro" and then have only 2 real choices (I'm mostly just dismissing MBpro 13" here).
As to all "would you pay just a little more for..." logic, that can get you all the way to a fully loaded MBpro. Apple hopes people are concerned with paying "only a little more" for a "bit more" Mac. There's lots of profit in pulling the purchase up for "a little more."