Of course, managed means you don't take care of say, creating your own X.509 CA and issuing certificates, tending to their expiry, installing Tiller, setting up pod networking etc. etc.
All of these much more annoying and harder than `helm update --install`ing some charts to your own cluster.
To be fair installing tiller hasn't been a thing for years. And pretty much everyone using cert-manager and lets encrypt which makes the whole X.509 story pretty much a no brainer.
All of these much more annoying and harder than `helm update --install`ing some charts to your own cluster.