

While police may resent offensive words, they cannot use their authority to punish individuals for lawful, protected conduct.
Factually incorrect.
First, consider that regardless of whether they are prohibited from arresting people for insulting them, they do. Those charges are often dropped or thrown out, sure - albeit with no consequences for the police officer - but I would consider having to deal with that hassle “punishment” that they can inflict purely because of their authority.
But there’s also institutional support for an officer to punish you for lawful, protected conduct. If you upset an officer and in response, he cites or arrests you for a minor but legitimate offense that he’d have otherwise not cared about, you’re very unlikely to get that technically legitimate charge thrown out of court. It may be that police are technically prohibited from doing this, but in practice, “He only arrested me for — insert random crime here, let’s say jaywalking — because I called him a pig, said I’d engaged in coitus with his mother the previous night, and asked if he’d like to watch next time or if he had a night in with his partner’s nightstick planned” isn’t going to suffice to get the charge thrown out, even if the judge believes you, if you were actually breaking the law in question. And since pretty much everyone is breaking laws all the time, this means that as long as the police officer can find one that you’re currently breaking, you’re fucked.
I’m a professional software engineer and I’ve been in the industry since before Kubernetes was first released, and I still found it overwhelming when I had to use it professionally.
I also can’t think of an instance when someone self-hosting would need it. Why did you end up looking into it?
I use Docker Compose for dozens of applications that range in complexity from “just run this service, expose it via my reverse proxy, and add my authentication middleware” to “in this stack, run this service with my custom configuration, a custom service I wrote myself or forked, and another service that I wrote a Dockerfile for; make this service accessible to this other service, but not to the reverse proxy; expose these endpoints to the auth middleware and for these endpoints, allow bypassing of the auth middleware if an API key is supplied.” And I could do much more complicated things with Docker if I needed to, so even for self-hosters with more complex use cases than mine, I question whether Kubernetes is the right fit.