was this article even written when the pi5 was out? The pi4 was out, and pretty good for quite a while, but really expensive in the last four years. The pi 5 is up there, but the price almost makes sense, so.

you can do quite a bit on these machines, but they are inherently limited, running a proper nas is going to be rather goofy, and probably just justifies getting proper hardware at the end of the day.