Im not suggesting that the 'Tank' is obsolete (and i dont think the author of the topic video is either), but obviously all of the things you mention here add costs to an already expensive platform, which (from a procurement perspective at least) is a factor in the viability of said platform, especially if/when there are cheap, mass produce-able anti-tank weapons and drones to consider.
I also understand that combined arms is 'a thing'. Just sayin