I believe this is true and if so, then the argument should be against package managers, not Docker specifically. Most (if not all) of the official Docker images are built either by compiling the binaries from source, properly installing the binaries from the base distro's package manager, or pulling and verifying a pre-built binary from the vendor's website. For most cases, I don't see anything wrong with any of these.
Personally, what I like is no longer having to setup arch specific build machines containing all of the build tools and dependencies for all binaries that I wish to self-compile. Instead, I either use the vendor's Dockerfile which already contains everything it needs to build from source or I simply write my own if there is not one available. Building and distributing these binaries in the form of Docker images is a breeze using Gitlab CI and container registry and is just as easy with a small VPS and Docker Hub.
Personally, what I like is no longer having to setup arch specific build machines containing all of the build tools and dependencies for all binaries that I wish to self-compile. Instead, I either use the vendor's Dockerfile which already contains everything it needs to build from source or I simply write my own if there is not one available. Building and distributing these binaries in the form of Docker images is a breeze using Gitlab CI and container registry and is just as easy with a small VPS and Docker Hub.