Are containers as overprovisioned guests?

A story-joke i've heard from a friend:
Quote:

' container technologies remind me of inviting someone in your home and .... surprise he/she comes with not one or two basic luggage (clothes,towels etc) but with his favorite foods, his favorite chair, his favorite bed , his favorite table , his favorite tv etc. And why not his favorite room! '

So without being expert on container , but understanding their basic function i wonder if that jokes contains a truth or not.