What you do is your call. You can say “Screw you guys,” and ignore the needs of Red Cliff in order to go after completing your main quest sooner. Alternatively, you can play the great charitable hero, help all the little people, and put off your main tasks. The choices made will impact the game, no matter which one you make; for example, if you ignore the pleas of the Red Cliff citizens, later in the game you might run into a situation where someone from the town could have helped you in some way—but won’t or can’t.
Why does this make it sound like you have a choice between playing the good guy and getting extra help later down the road, and playing the dickhead and shooting yourself in the foot because of it. Shouldn't there also be effects from ignoring people, not just missing out on stuff becasue you choose not to do anything.