i think if you have a modded dslr or some form of astro ccd then yes you should get the colour balance 'right'
but to me, for an unmodded dslr its just rediculous even saying that the colour isn't right because its not red, of course it isn't because its not picking up anywhere near the amount of Ha as an astro ccd or modded camera and i don't think saturating the red channel is a real solution to this because you just wont have the Ha data there with an unmodded cam.
Im sure its easy for someone that has all the fancy gear to tell someone that struggles with lesser equipment that this and that is wrong with their image but noone gets out there with the intention to take an out of focus or poorly tracked or even the most disastrous, wrong colour image.
all you can do is get out there and give it your best shot and if thats not good enough for some people then i guess its bad luck
i just find it horrible that people spend hours capturing an image that they get told they got horribly wrong when they have done nothing wrong, it is just a limitation from their equipment.