No you dont NEED Heroic quest, but they do offer additional story AND rewards that are better then solo quest.
heroics give 3 commendation and a large sum of xp, plus the drops. story is the usual "there's a guy that needs to be killed/defended or stuff looted". so nothing special
plus they are dailies, can be shared and have no quest requirement - which means if people REALLY wanted to do them, they would just reply to the lfm in chat (I highly doubt there is not ONE player looking for a group), let some1 share the quest and off they go.
and even if they did them the day before, what's keeping them from repeating the mentioned steps today?
the learning experience of running said flashpoint (and to do hood rat things with your friends
oh yes. force push in cademimu is hilarious.