That seems a bit of a far-fetched use-case to be honest (you would have to design a complete app around this, and somehow maintain a server running on some device that travels throughout the world). Completely different issue, which naturally needs this compilation issue to be completed first ;).
ARM in general is making a good name for itself as far as architectures go and the Go language used to build Dgraph has cross-compilation built in. It does take some effort rewriting the current CI/CD pipelines and optionally finding some ARM hardware for that. Docker buildx may be a short-term alternative to emulate ARM64, too. Also, I wouldn’t mind opening up my three piece RPi4 cluster for some initial CI/CD testing.
Here’s to hoping this gets picked up soon! I think it would be great for enthusiasts to start tinkering on their Raspberries with it.