TL;DR: Key reasons why you should block Mao (aka: Daizhige, domain: .mastodonhub.com) Mastodon ...
Incident of copying other servers posts.
One of the Chinese Mastodon server named Mao copied other servers accounts and posts without the permission of the original accounts. This can be said pretending and it makes people confused when searching the accounts.
The author's post : https://o3o.ca/@salt/105370185084896036