I think GP's point was that Kamal has all of these things already, so you don't have to set them up.
It’s stuff like this that’s just a thousand papercuts that dissuades me from using these “simpler” tools. By the time you’ve rebuilt by hand what you need, you’ve just created a worse version of the “more complex” solution.
I get it if your workload is so simple ir low requirement that zero-downtime deploys, rollbacks, health/liveness, automatic volumes, monitoring etc are features you don’t want or need, but “it’s just as good, just DIY all the things” doesn’t make it a viable alternative in my mind.