I'd argue that while containers have been attractive for that reason, they're actually really bad at it (layered binary blobs?) -- and good at the other stuff.

I'd argue that while containers have been attractive for that reason, they're actually really bad at it (layered binary blobs?) -- and good at the other stuff. It's pretty unfortunate that's been one of the main propelling forces behind containerization, I think we've ended up with subpar tools because of it.