Looks like it's a Fediverse server that mirrors Twitter.
And I agree, linking it on HN is just a childish way of showing you're not down with Twitter. Don't force your views on others.
I run my own nitter instance for a group of friends, the secret is to never link it publicly because the traffic will destroy it.
[0]: https://nitter.tiekoetter.com/elonmusk/status/16368352095879...
Forcing your own nitter instance on others and not letting them make their own decision is absolutely forcing something on others.