This isn’t true. It’s been going around since the special aired but it’s just speculative at best clickbait that is just trying to rile folks up.
I highly doubt that Disney gives a shit. They get made fun of and critiqued all the time. And South Park’s special isn’t enough to cause any major downturn in their numbers no matter how influential we think the show is. Disney+ (and other streaming services) is losing subs because of their own corporate incompetence.
I wish they would bring him back.