Why would somebody use Arch (a distribution with a rolling release) on a product? Debian is a reasonably platform for such devices (though not the best due to

Why would somebody use Arch (a distribution with a rolling release) on a product? Debian is a reasonably platform for such devices (though not the best due to the ~2 year release cycles, rather than eg, 10 years for CentOS distributions back when they were around). I do take the point that Ubuntu Core may be even more suitable, but Raspbian should work fine for many real world applications.