It's the fediverse which is by design and intention is supposed to support freedom of speech. Unless we're talking highly illegal content like child porn, I won't step in. Hive-style votes don't play in unless I suppose there is some serious modification involved. The idea behind any federated instance is to rekindle the free speech that was once common on the internet.

In general I don't think you understand what type of a protocol this is. This is a parallel technology to blockchain-based transparency and freedom of speech but it's not the same technology. We can't make it a blockchain just like we can't make a blockchain the fediverse. While a blockchain must have layered cross-chain solutions built on it to interact with other blockchains, the fediverse has this interactive capability by default.

The Hive angle here is simply making an instance that's a community for Hive users. Not all Hive users are on it and many opt for their own instances or others. This doesn't stop them from interacting with one another but having this Hive-focused portal is for a sense of unity and to help people connect on something that's new to them.