First of all there's literally a paragraph called Infrastructure. Then one of the arguments is how cheap it is.
I don't find it fair to praise your tech-stack for simplicity and being cheap (awesome features btw) and fail to mention resilience. Unless you run a service that can be down 10% of time for example. Not the case here I guess since we talk about SaaS.
Maybe those other things were there, maybe they weren't but it wasn't about what you should do, just what he did.