All dapps use APIs to get data from the blockchains. Censorship at the API level affects all dapps using APIs, including Steempeak, which is completely censored by the #irredeemables list through that mechanism, and obviously others employed by Sun Yuchen.

While Sun is only presently censoring Steem, the API level censorship of Hive is ongoing presently, exactly as it is on Steem.