Fabulous animation, if only there had been more focus on the North Atlantic, west Greenland and Arctic.
On Greenland glaciers being the source of melt freshwater affecting AMOC overturning, the attribution to specific glaciers and reconciliation with Irminger and other well-known currents often seems supported by hand-waving. Indeed the currents don't go over cold spot way so a correlation with overall mass loss (or stable isotopes) on the whole of Greenland is not causation.
In particular some parts of SE Greenland are gaining mass as snowfall is exceeding ice loss, the question being where is all this moisture coming from and how is this changing. I can see that Greenland is nearby and a logical suspect but what is ruling out floe melt carried down the Fram by the East Greenland Current?