Wasn't that South Korea goal enough to persuade the luddites? In past World cups that goal would have been disallowed and it is a lot less likely that the second would follow. South Korea would likely have gone home without that great victory against Germany on their resume. Sure it doesn't make a difference to the rest of the tournament, but it sure mattered to them.
The incident itself is surely enough of an argument to persuade the luddites. <3 VAR.
The sentimental knock-on effect is irrelevant though. It could've been the other way around and VAR denies Korea that joy.