Unmentioned in the video is another significant but not fully appreciated effect: local gravity. The term "sea-level" is a bit misleading. Wind, currents, tides, and various gravity effects keep the seas from the equilibrium that some folks may imagine.
The large land-based ice sheets of Greenland and Antarctica have tremendous mass & therefore generate a gravitational attraction to the surrounding ocean water. You can picture this as the ocean 'bulging' up somewhat around these landmasses. As such ice melts it not only increases the ocean volume but also changes local gravity conditions, dispersing the current volume of these 'bulges'.
So any large-scale change to such ice sheets contribute differential impacts across the globe. For example, a volume of melted ice sufficent to distribute say, 3m of volume ocean-wide will actually generate a higher result (from the compounded gravity effects), and will be distributed unevenly around the globe. i.e. it will be larger in NYC and Shanghai than the 'average' rise overall. Maybe as much as 25% higher.