Final 3 greens
Fair point and not unreasonable if the steaming is happening on boarding. OTOH it's possible that the A/C has been set up to avoid this ( e.g. only 2 packs on on a 3 pack aircraft) so the first time the steaming happens happens is perhaps packs on after a packs off take off...just a thought...
On my more general point - we live in an "instant information/ I have a right to know age": if our Customers reading this demand to be told instantly of the why's; wherefores and reasons every non-normal event that happens on a flight then we have got a heck of a lot of educating to do.