I don't really see an explanation for the complexity though, this is usually itself very interesting. After the live CD years it became much easier to abandon

I don't really see an explanation for the complexity though, this is usually itself very interesting. After the live CD years it became much easier to abandon the headaches and work with large signed images, but most OS vendors have had at least one pressure to continue with the hellscape of patch permutations and one way configuration adaptions.