Suspension of disbelief is always up to the reader to decide. There are plenty of examples of plots and settings in SF that the reader suspends a lot of disbelief in... the entire Star Trek canon, for instance. But even if you ignore the scientific fallacies, mostly engineered to advance the stories, you can find some great literature in there. (Sometimes.)
On the other hand, if you are more demanding of your science, suspending your disbelief can ruin the story for you. So you decide what is and is not acceptable, to allow you to enjoy the story experience.
Some people can turn it on and off at will, others can't. So you just go with what works for you, you either swallow the scientific problems (and even the best SF literature has it), or you stand by them, and see what stories are left for you.