It's not clear whether consumers do or even should distinguish between M1 and M2.
> Also no follow up to the Mac Pro at all.
Mac Pro sales have always been tiny portion of Mac sales and have very little effect on the big picture.
The point being if you bought the M1 during the pandemic, you now have little reason to upgrade despite it being a 2020 processor in 2023.
Only processor transitions such as PowerPC to Intel and Intel to Apple Silicon give a good reason to upgrade within a few years.
But there are more than just instruction set transitions. The difference between the Pentium 4 and Core 2 or Bulldozer and Zen were stark.
Even the Ryzen 7000 series has AVX-512, DDR5, PCIe 5.0 etc. It's frequently twice as fast as the 3000 series from 3 years earlier. The M2 isn't that kind of thing.