* iPad 1, which was basically a iPhone 3GS with a bigger screen, and from day 1 didn't have enough RAM to drive the big screen
* First Intel macs, which were 32-bit, before Apple quickly transitioned everything to 64-bit
* First Apple Watch ("series 0") which was just underpowered in general
The M1 Macs really don't appear to have any obvious flaws like these.
* iPad 1, which was basically a iPhone 3GS with a bigger screen, and from day 1 didn't have enough RAM to drive the big screen
* First Intel macs, which were 32-bit, before Apple quickly transitioned everything to 64-bit
* First Apple Watch ("series 0") which was just underpowered in general
The M1 Macs really don't appear to have any obvious flaws like these.