Yeah I don't see it. I don't really have any investment in how you boot your machines, but I can't see this being anything but significantly more work than just using the tooling that's already there for you. When I buy I computer I set it up once and then it lasts 3-6 years. Even setting the system you've got up once would likely take me more time that I've spent adding partitions to disks in the last 20 years. Heck that's probably true even if you include all the servers I've administered in that time as well as my personal machines, especially since those all ran Ubuntu or RedHat where the installer just does it for me, vs my personal Arch machines.

I partition a new computer once every few years. I upgrade the kernel a few times a month. With the normal way that's a simple `pacman -Syu` or `apt get dist-upgrade` and it's handled, no mounting thumb drives or sftp needed.