"Compared to the mass of humanity that BA stuffs into its F cabin" F..me... get a grip.
Head down to Y on a 787 and that might be stuffing people in.
Last week was my first BA 789 F and the aisle felt as tight as it gets, similar if sat in the middle on a 744 but I wouldn't call them stuffing people in. I didn't feel stuffed in today on a 777 either. 64K is nice yes but I wouldn't pick it over F UNLESS I wanted to decline all service and just sleep but then I find the seats rock and move if the person next to you moves a lot.