I've been around for the cloud migrations in every phase, what we have today with Kubernetes is miles better than the maze of Puppet and other crap we had 20 years ago.
What happens when your Cillium Service Mesh starts misbehaving due to missed network packets ?
Or when you have to setup a resillient backup of a cluster that runs 30 000 pods on 300 nodes ? And upgrade.
Or when you have to provide a telemetry for highly distributed system using 5 languages on landscape spread over frontend and backend with three different db engines and two clouds ?
Kubernetes is easier to start but 10 times as hard to do at scale you didnt even have back then in OnPremise era.
Yes you are right there are a lot of ppl who can write and deploy „Hello World” apps, but thats about it.