The USMC decided it's going to fight a different kind of fight, being dropped off on small Pacific islands with antiship missiles and artillery to produce a set

The USMC decided it's going to fight a different kind of fight, being dropped off on small Pacific islands with antiship missiles and artillery to produce a set of distributed antiship bunkers. Their divestment of the tank is not because they thought the tank is obsolete, but because the tank doesn't fit with the fight they're planning for. Most armies, including the US's, still plan to have fights where tanks make sense. Of course the question of whether or not those kinds of fights are likely to happen is a valid question, but is orthogonal to the question of whether or not drones and ATGMs make tanks obsolete