My point was that running `apt-get upgrade` is used in the process of installing packages besides tmux. For example some random postgres extension for something

My point was that running `apt-get upgrade` is used in the process of installing packages besides tmux. For example some random postgres extension for something I'm working on, plus its respective dependencies. That process often needs a blanket `apt-get upgrade`, and very occasionally that installs a new version of tmux which isn't compatible with the old version's configuration file, breaking it in ugly ways. So then I have to fix tmux instead of whatever it was I was doing the original upgrade for. As a daily linux user, your original point doesn't make much sense in this light, since upgrading is a part of work.