It was facebook[1] stated policy to prevent all discussion, so even if there was not a user level bann they were removing all posts and discussions about it
Twitter banned lots people for it (and other COVID "misinformation") it would be hard to point to a perfect example as often people that wanted to discuss lab leak also talked about masking, masking policy, vaccine efficacy, and Vaccine mandate policies. All of which were also forbidden topics. If you dared to speak out against "The Experts" at the cdc or WHO then you were either shadow-banned (i.e posts hidden, de-ranked, etc) or outright banned
Twitter banned lots people for it (and other COVID "misinformation") it would be hard to point to a perfect example as often people that wanted to discuss lab leak also talked about masking, masking policy, vaccine efficacy, and Vaccine mandate policies. All of which were also forbidden topics. If you dared to speak out against "The Experts" at the cdc or WHO then you were either shadow-banned (i.e posts hidden, de-ranked, etc) or outright banned
[1] https://reason.com/2021/06/04/lab-leak-misinformation-media-...