It stands to reason that having the O2 is better than nothing (if there is no fire), but one of the things you will have to think about is supply - supplemental O2 for the pax is limited ... the (basic) rule require 10 minutes worth of supply ... once it’s gone that's it!!
So there is
another question in the decision to deploy the O2 masks ....
Cockpit crew are OK ... operating above 25000ft you will have at least 2 hours
supply ...