There is a small linkage that links the floor to the turret, but it is not part of the turret mechanism the turret is driven by the ball bearing assembly. if that floor was to be hit the top section that drives the turret would still operate.
The floor actually is not moving and that is from a CR1 so cannot be used for a bug report but they use the same turret drive systems.
Now on a Leopard or M1 the turret is rotated using the basket.
Well not the autoloader per se but there is an additional basket within the T-64/80s autoloader that the crew seats are mounted to (and that prevents the crew from having their legs crushed while its cycling) and that the “independent” part of the autoloader rotates around.
On T-72/90 the part that actually moves indepdently is below the top plate thats modelled as part of the autoloader ingame right now.
The plates above the charges do not rotate with the carousel but with the turret itself and are essentially what the crew sits on (or well rests their legs on but you get the idea)
Hes on about damaged baskets, not damaged floor. Completely different thing. If a floor of a challenger 2 took shrapnel or a shell through it or any damage, it would not stop the turret rotating. A basket yes, not floor. The floor rotates from the turret, not turret from the floor. So the turret would have to get damaged to stop floor rotation, not other way around. Some holes in a floor wont stop a turret rotating.