"Large scale enterprise" is the key here.

Kubernetes was made by Google. Google is not your startup, it has millions of servers serving billions of users, of course it needs complex systems, and it has thousands of people to maintain them.

In a small company, you probably don't need much of what's in that "need to" list. Rent a server, maybe a second one for redundancy, install your packages, run your app, and if you did things well, you can do quite a lot with a single machine.

But a lot of people think they are Google, and get ready to scale to a level they will never reach, and do it badly.

I think that where most of the pooh-poohing comes from, the use of overly complicated solutions for your scale.