Not too quite so, and the COS author addresses this in its website. (https://collapseos.org/why.html, section "There are two stages of collapse")
To be clear I don't necessarily share the view that this will likely happen, but for the sake of discussion I will assume it will.
A working macbook will indeed be much easier to encounter working at first, but not only is it much less durable (it isn't even particularly durable from current laptop standards), and parts are much more numerous, specialized, and hard to find. Macbooks in particular have a very tightly controlled supply chain, but this applies to other laptops too.
Z80 style processors and peripherals are still in use in various industrial and home appliance products, so it is still rather widespread anyways.
This means that while a laptop might be way more useful at the beginning of a collapse, it will probably stop being maintainable much earlier than a simpler computer will. In fact, if push comes to shove, it is plausible to actually build a Z80-compatible processor from discrete transistors.
To be clear I don't necessarily share the view that this will likely happen, but for the sake of discussion I will assume it will.
A working macbook will indeed be much easier to encounter working at first, but not only is it much less durable (it isn't even particularly durable from current laptop standards), and parts are much more numerous, specialized, and hard to find. Macbooks in particular have a very tightly controlled supply chain, but this applies to other laptops too.
Z80 style processors and peripherals are still in use in various industrial and home appliance products, so it is still rather widespread anyways.
This means that while a laptop might be way more useful at the beginning of a collapse, it will probably stop being maintainable much earlier than a simpler computer will. In fact, if push comes to shove, it is plausible to actually build a Z80-compatible processor from discrete transistors.