His argument is especially nonsensical when pointing the finger at software developers. Writing web apps that run in Linux containers on some cloud provider

His argument is especially nonsensical when pointing the finger at software developers. Writing web apps that run in Linux containers on some cloud provider somewhere teaches you very little about the fundamentals of how computers work. For the most part, it doesn't even teach you much about how Linux works. The developer is so far abstracted from the hardware at that point that the OS doesn't really matter.