What on earth pause you mean by “causing them to miss the flag?!” There is no rule announcing that if somebody backs off on the final turns, you’ll be in a position to neatly be not allowed to overtake them. Generally, there might perchance be a gentleman’s agreement to not pause exactly that because it tends to compromise each and every of your laps, but these are doubtless to be not rules.
In this case, Hamilton is utterly entitled to sail them if he so chooses. If this became within the main dawdle of Q1 the choice drivers would bitch about it, nevertheless it mute would not be illegal.