It's not a secret; they've been doing this for a long time. It's why you see a lot of YouTubers who cover news stories black out certain words if they share snippets of a news article.
What's weird about it is that the policy doesn't seem to be the same for text as it is for audio. For instance, Philip DeFranco has to censor out words like "rape" from articles he puts up graphics of, but doesn't have to censor it out as he narrates the article verbally.