A good example of the hypocracy of facebook is, while they censor content for the good of all, they run an onion site-- facebookcorewwwi.onion to evade censorship by others.
You're free to not connect to their platform either way (and to be subject to their limitations regarding contents and behaviour), whereas setting up an onion service can be about stuff that people aren't free to avoid (i.e. censorship by the only ISP they might have, by a state, etc). There's no issue with consistency there.