Singalong -- I think perhaps your initial question put judgement on the actresses you "called out".
I will say this -- I've met a few of these women in more 'social situations' (NOT stage door) and some of them are just really shy/uncomfortable with people. NOT the people they know, but strangers.
Some are just trying their best to stay healthy and rested. While you could make the argument that stage dooring isn't asking all that much more of them realize:
-Germs galore are waiting at the stage door.
-A half an hour more at stage door being "ON" is still performing.
-Stage dooring is another 1/2 hour they are not home resting, relaxing, just being with family.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.