Is it complex? Yes, but so is the problem it's trying to solve. Is its complexity still nicer and easier to use than the previous generation of multimachine deployment systems? Also yes.
It really confuses me how someone can argue for cloud providers over a decent open solution without realising their argument is simply they don't want to be managing the thing.
And that's fine, most teams shouldn't be neck deep in managing a platform. But that doesn't make the solution bad.
You're going to want most of what K8s has anyway: blue-green deployments, some way to specify how many replicas you want, health checks, etc.
The initial setup cost is annoying if you've never done it before, but in terms of maintenance it's very very easy.
That being said I love exe.dev and have been a happy customer since launch. It's a different use case but they do an amazing job at it. Very, very easy personal cloud dev box. But K8s is very very good too, just for production workloads rather than personal ones!
I run it at home and at work, and while I do hate installing it, once that part is done I've never run into these problems that people claim requires a 20 person(!) team to baby sit it. Maybe my scale is too small or whatever, but its hard not to think that maybe they are just "holding it wrong"...