Some communities there are literally calling for the annihilation of Ukraine
https://programming.dev/comment/1999097
edit: Since people are either willfully or otherwose are missing my point, this is a pro-russia, pro-fascist hate group, therefore we shouldn't give them the platform to spread their shit. this is not about me seeing their community or then causing issues accross other communities, it's about de-platforming fascists.
It's not a single user. The instance is a safe haven for tankies. This thread is 90% them supporting the CCP. Quite a bit of it is pretty trolly, too. I'm sure you'll find a large number of their users support Russia over Ukraine.
The whole instance is known for brigading enmasse to shut down real discussion. They got defederated from lemmy.ca for doing this.