> Docker sucks and only exists because after all these years, Linux STILL doesn’t have a great way to handle third party applications.

That's... not at all a correct characterization of where Docker found its purchase or what it's used for. Easy containerization dead-to-rights solved the version hell problem of shipping software at scale from vendors and upstreams that can't agree on dependency management. That's not something you can fiat away with "excellent ports and package systems" unless you imagine a world where literally every tiny microservice or cloud backend gadget ends up as a port in a single tree.

Basically you're saying "Docker sucks because I don't do anything that needs containers for anything but security". Well... yeah. I guess it would seem that way.