there are no real deployment differences, eg. systemd has portable services, full containers via nspawn, etc. and there are many other ways to realize what dock

there are no real deployment differences, eg. systemd has portable services, full containers via nspawn, etc. and there are many other ways to realize what docker does with or without containers (eg. what yandex does internally by just packaging their internal software and parts of configuration into debian packages, and manage reproducibility that way) and you don't provide any other technical arguments what remains is you strongly telling me something I already acknowledged in the previous post (that you can perhaps make efficient use of docker, but it's hard to make it not waste resources in general use case)