It was banned because it didn't follow court orders to remove illegal content from it's platform, yes. Whether the content was rightfully illegal, I don't know because I didn't see it, one side claims that it "was critical of the government" the other side claims that it "was inciting hate and violence".
Now I hope that we can agree that there are valid reasons to remove and ban online content, and from the news I hear about Twitter since it was bought by Musk I think the content was rightfully banned. Just knowing that Musk was against the ban is enough for me to believe so.
The developer is releasing their next game "Neva" soon (Oct. 15). I hope it will be as great as Gris!