When I said base model M1, I meant the CPU as opposed to the M1 Pro or Max, not the base model machine. The M1 CPU is fast enough to be "capable for years to come."
Also Asahi currently has decent support for up to the M2 Max, which is available in significantly higher configs and very much will be "capable for years to come".
Yes they still have soldered SSDs, but I have a feeling the 4TB SSD in my personal M2 Max machine will in fact last for many years. Not to mention that it's possible to solder on different NAND chips if the existing ones fail, though of course that requires a shop with sufficient skill and tools.
My point was only to say that keeping up with each years model may in fact be impossible, but the M1 and M2 line of chips are so capable that even if they stopped there, it would be a useful operating system for many years.
And they're right, the "base M1" (as in not the Pro, Max or Ultra) is a very capable chip.
Yep, that is exactly what I meant.