Yes (assuming no further bullshit from Disney), in 2024 you would be legally allowed to sell a verbatim copy of the original Steamboat Willie animation, including any bits where it says "this animation was made by Disney" (because that's just factually true). But if you remixed Steamboat Willie into something different, you wouldn't be legally allowed to even remotely suggest that your remix was made by Disney.

That's wild to me... but I guess if it all checks out legally.

I think its only blows my mind because of how hard Disney protects against that sort of thing. I guess they just can't fight it anymore tho.