...all tanks are vulnerable on the thinly armored top.
as aircraft carriers replaced battleships in WW2, it seems as though drones will replace a whole slew of weapons in the next war
That is true. Both NATO and Russian tanks are readily destroyed by highly accurate FPV drones carrying even small EFP warheads.
Forget the tanks just wait till the magically F-16 appears in the skies over Ukraine! The war will soon be won.....