[Lammy]

Arguing in favor of more than one person per project is not "obsessing" over bus factor lol. I want to be able to take days off, and I want my coworkers to enjoy the same.

The kind of takeaway I'd want to see from your first example is less like "don't do the things we know will cause breakage when we can't tolerate breakage" and more like "develop runtime-gating of new features and a way of sampling or shadowing production traffic onto n+1 builds before they are eligible to become the released build".

I've also had many issues with dodgy hardware of all types forever-circling repair queues in large fleets and never had a satisfying outcome for it either. Hopefully one of these days.