Not sure if sarcastic. Twitter, Facebook and Youtube are all heavily engaging in censorship. For example, they banned people last year for talking about the lab leak hypothesis, which is now acceptably mainstream(1). They are currently censoring a Youtube channel(2) run by a PhD in biology, who has been interviewing MDs and the inventor of mRNA vaccines, and whose stated purpose is to help end the pandemic(3).

1) https://youtu.be/sSfejgwbDQ8?t=170 (Jon Stewart on Colbert earlier this week)

2) https://twitter.com/BretWeinstein/status/1405234596820643840

3) https://twitter.com/BretWeinstein/status/1404474243128037378