Easy answer:
Apple's ruthless support policy.
Over the last probably two decades since Apple adopted a pretty much free OS model, Apple has "given" its users like a 6 or so year window of support and then you get kicked to da curb. The M1s were introduced in 2020 and that makes buying an M1 now at this point wholly foolish. The problem is that Apple keeps its support drop policy a closely guarded secret from everybody, so you can't just go to Apple.com and get a reasonable, rational answer as to when the M1 will no longer be supported. It'll just be supported until Apple says you're no longer supported and that's that. When Apple decides you need to go buy new computer, get up and go buy a new computer. They have the power, they get to decide. Many Apple users often just buy a new machine every two year anyways simply because they can, so most don't actually get affected by the cut off.
These A-series laptops will be supported probably until 2031/32 or so. This is the no-brainer smarter purchase when compared to a M1.