Obviously we’re talking about hobbyist level stuff and with that there’s always something what can go wrong and it’s not always obvious what it is. So if the ‘remote end’ doesn’t have someone who can do at least very basic troubleshooting it can be nearly impossible to fix the setup over the phone unless you just replace the whole thing and ship whole units back and forth.

But in this particular case the remote end has someone who knows their stuff so it’s taken care of, with or without a KVM. I’ve been thinking a similar setup with my relatives and on my case the distance isn’t an issue but it’s still something I’d need to bother family members with and, for me, it was simpler to get a storage box from hetzner and run backups to that instead of getting more hardware.

Maintenance is anyways something you need to consider and viable options for that vary on a case-by-case basis, so there’s no ‘one size fits all’ solution.