Anti tank weapons have been incredibly successful in ukraine, but it doesn't necessarily mean that the tank as a military platform is obsolete. The new weapons can go up in the air and they plunge down. They're called top attack mode, and they strike the tank where the armor is weakest, which is on the top of the turrets. This is also a big challenge to the future of protecting tanks. It's now easier to attack stuff from the air, i think, because armed drones have become ubiquitous.