Are there streaming rights issues? Are they holding back content to drip feed content drops for as long as they can? Did they determine that some content isn't worth digging up the tapes and preparing for streaming?
This seems likely to be part of the same philosophy.
The Chinese Communist Party wasn’t happy the film was made in the first place and would probably ban Disney from their market if it was available for streaming in the USA.
It’s quiet, limited sale on DVD is still tolerated.
Cartoons have also been censored:
https://en.m.wikipedia.org/wiki/Censored_Eleven
https://deadline.com/2021/03/pepe-le-pew-space-jam-2-new-yor...
Many cartoon shorts from the 30s and 40s with blackface and other offensive material has been edited. I can’t find references right now, but have noticed this personally.