> Heck, I‘ll take a Raspberry Pi over an Arduino any day to automate a simple relay, just because with real Go and Linux I can use the same tooling I‘m using every day at work.

I don't think this is a good example as for many people there are far more good reasons to pick up Arduino over RPi in this scenario. With LinuxBoot the question is far more complicated. If there is a vendor using it, and if it's done properly, you won't even notice a difference.