A quick look on Wikipedia[0] shows that 14 GP/s is bad, but really not that bad. It's not like games from 10 years ago when that kind of fill rate was common all looked this bad. Consider that even the humble Xbox 360 had plenty of better looking games than this and only had a <1 GP/s pixel peak fill rate.
I don't think this is a particularly good argument in Meta's favour.
0: https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_proces...