Even the original iPhone would've had plenty of power/performance to smoothly handle swapping for Amiga applications. Your Amiga would certainly not have had the power to handle swapping for iPad applications. You cannot simply ignore the role that workload differences have here, when the whole point was to offer an acceptable user experience.

I can and shall. Any recent modern iPad Pro had plenty of ability to implement swap. I won’t believe that something in the M1 somehow made that possible for the first time ever in that device, especially when Macs with lesser capable CPUs have had swap for decades.

Lots of possible reasons: performance, ecosystem bugs, limitations with the A-series of processors, issues with the disk itself, security, dealing with disk encryption, who knows.

Believe what you want, but blanket statements like that are beyond silly.

Did Amiga use flash memory with a limited number of write cycles for storage?

No, but my contemporary-to-the-M1-iPad MacBook Pro did.