>>149320106 (OP)Because the amount of care, detail, and soul that went into this scene is nigh impossible to replicate in modern times despite advances in tech.
One, western studios aren't likely to give 2D animation that big of a budget for this level of animation. They would rather give those big budgets to low-effort, low-risk, live-action tentpole movies instead.
Two, very few modern animators have the skill and work ethic to pull this off, especially western animators who rely too much on cheap and quick yet soulless 2D puppet rigs and beanmouth. Indie animators might be able to, but that's a massive undertaking.