I pre-ordered the iPhone Air this morning for 9/19 in-store pickup, coming from my current 15PM that I've had for almost 2 years (and before that 13 Pro, 12 Pro and then X). I would classify myself as a "prosumer" - I like nice stuff, but I really don't *need* the power.
This is a similar situation these days with the current Macbook Airs, ever since the M1. The performance in the MBAs for the last few years has been more than enough for *most* people. And the Macbook Pros now feel more for true professionals who need the power / use their laptop as their livelihood, and thus have the more chonky body / ports.
I actually just got the M4 15" MBA, after I had the 2021 M1 Pro 14" MBP for last 4 years, and before that the 2016 13" MBP.
I got the Pro, but realized I didn't really "need" it.
The iPhone Air is a beautiful piece of tech. It really feels like the premium, luxury device for the "prosumer". If you need either the performance, the extended battery life, or the add'l camera lenses, you'll know it and you'll go with the Pro/Pro Max. But I agree there's probably a solid number of people who don't need those, but still want a premium device.