Having worked in Unity I'd take engineering advice from their top execs with a grain of salt.
I'm confused. The blog post is written by Adam Johnson. Are you referring to Mike Acton or Adam Johnson?
I never heard of Adam Johnson before this HN post. From his books, he appears to be an expert in Django. Yes, I agree about Mike Acton and his ideas around Data-Oriented Design. It sounds like a very interesting approach to programming in a resource constrained environment.
> It sounds like a very interesting approach to programming in a resource constrained environment.
It's more of an approach that is maintainable and straightforward, and only coincidentally (well, not really...) also straightforward and fast to execute.