[marten-de-vries]

And Facebook has the right to 'inform' another company about all data it collected from its users (only in exchange for a nice sum of money!)

Except in the EU, freedom of speech and privacy are both considered human rights, which need to be weighed against each other. Freedom of speech will win when someone uses the GDPR to try to censor e.g. an online news article with some personal facts. But it won't for my Facebook tongue-in-cheek example, and I doubt it will for the redacted committer example either.