This is pretty plainly a case of the mythic payload at the end--grand as it certainly was--still definitely not making up for the preceding rubbishy story management.
The movie spends way, way too much time in interminable nail-biting, will-they-or-wont-they races against the clock to overcome tech issues... where the depiction of said issues will certainly make thinking people cringe at those depictions and (again) the way they're gratuitously shoehorned into the exposition to (I guess) kill time en route to a feature-length runtime.
By the time you wade through all that crap, the denouement--while well-meaning--can't undo a knot of artlessness tied that tight.
The movie spends way, way too much time in interminable nail-biting, will-they-or-wont-they races against the clock to overcome tech issues... where the depiction of said issues will certainly make thinking people cringe at those depictions and (again) the way they're gratuitously shoehorned into the exposition to (I guess) kill time en route to a feature-length runtime.
By the time you wade through all that crap, the denouement--while well-meaning--can't undo a knot of artlessness tied that tight.