Oh, I'd have to fully disagree there. You left out several upgrades that make this much more than a "s" especially for the Max versions. I usually upgrade when there are several hardware updates, but my count.
1) 3NM CPU first in Phone.
2) 2 Gig increase to 8 total gig
3) Double the Screen brightness
4) Ability to write directly to a hard drive
5) Finally 6E support
6) Slightly larger battery 12%
7) Better cameras - (always has better cameras)
8) Weights less
9) Almost forgot USBC!!!!
These are more than enough reasons for me to upgrade.
1. Every generation has a chip bump. Bumps are fairly incremental, not typically that significant.
2. Ok. More RAM. Great. But not reason alone.
3. My screen is great. If it is better awesome, but I believe it might be 1.5x not double.
4. I have no real use for this, and most people don't.
5. Yes, but most networks aren't yet. It will be a couple more years before phones can truly take advantage.
6. The iPhone 15 Pro Max has a 2.5% battery increase over the iPhone 14 Pro Max. Not 12%.
7. Again, yeah, uh-huh.
8. I don't care about weighing less. I like the solid feel of my 14PM. That isn't reason enough anyway.
9. Specifically why I upgraded my 12PM last year to the 14PM. I wanted to get what I could out of Lightning. I figure when I get my next new generation next year or the year after, I will be ready for everything I own to be USB C. So I'm glad I'm not on the USB C iPhone train yet. I charge mostly MagSafe anyway.
I think the 15 Pro is probably a decent upgrade for 12 Pro and maybe even 13 Pro users, but not 14 Pro users. And I would hazard many of the reviews and a lot of the opinion will say the same thing.