Coco and Haato are suspended from streaming for 3 weeks because they acknowledged Taiwan as an independent country, resulting in Chinese video site bilibili banning them. Hololive has issued an official apology to the Chinese. https://twitter.com/cover_corp/status/1310182796862791681

This is unfortunately the reality of working with the Chinese market. You have to capitulate to their wants because they represent a significant market share. VTubers working for Cover Corp/Hololive will have to actively police their opinions on Taiwan to avoid rocking the boat.

I realize my wording in the initial tweet wasn't the best so I just want to clarify. Haato and Coco didn't say/do anything explicitly pro-Taiwan, they just went over Youtube's analytics for their viewership/superchats, which displayed Taiwan separately from China in the list.