Most people who are afraid of doing all of those things haven't actually done them, and would probably be shocked to find that they aren't actually that complex. Kubernetes actually makes them more complex, but simpler in the aggregate. In other words, most of the apparent value in kubernetes vanishes when you do a real bake-off between kubernetes vs rolling your own infrastructure. There is still SOME benefit, but it's usually exaggerated.

Another problem with kubernetes is the flexibility it gives you. Look at five engineering teams using kubernetes, and you'll see five wildly different setups. Within that maneuverability, in a project that ostensibly makes things "simple", hides the devils that will bite you when you least expect it.