Its one of the oldest ways people disribute linux sources, and while it seems dumb, its actually good because regions with poor or no internet can also be served.
It’s not super horrible, and they’re meeting the requirements for GPLv2
I’d rather a git repo with history that can be cloned with physical media as a backup option
If you’re looking for a real bad one, Qualcomm has been trying to claim that their devicetree, which is equivalent to ACPI, and 100% necessary to boot anything is somehow “proprietary”