Wrong, it has _nothing_ to do with open source, it's just not the goal of certain popular Linux distributions.
And the need some people have to "upgrade". If you've got a working system that does everything you want, why would you want to upgrade and potentially break things. Just to whinge about how bad open-source is?
This is universal, it applies to open-source and closed-source environments.
It's why people have old DOS boxes still hanging around, or Amiga's controlling heating systems, or C64s controlling machine tools..