[throwaway89988]

There are only relative few startups or non startups which need complex infrastructure from a technical point of view...

In reality, there is a strong bias in favor of complex cloud infrastructure:

"We are a modern, native cloud company"

"More people mean (startup/manager/...) is more important"

"Needing an architect for the cloud first CRUD app means higher bills for customers"

"Resume driven development"

"Hype driven development"

... in a real sense, nearly everyone involved benefits from complex cloud infrastructure, where from a technical POV MySQL and PHP/Python/Ruby/Java are the correct choice.

One of the many reasons more senior developers who care for their craft burn out in this field.