How would this feature be useful?

When using pipx while the system has no internet connection, pipx list takes an awful long time because before printing teh list of packages it tries to upgrade the shared libraries.

Describe the solution you'd like

The main purpose of the list command is to list what's there, so if I know I have no internet I should be able to say "Just give me the list. I don't care about doing other maintenance things." because these maintenance things won't work in any case.

Describe the solution you'd like
An option like --no-maintenance or --dont-update for the list command.