The previous administration was completely nuts and would do and say all kinds of random things. The problems with communication and trust were too many to know where to start. Besides that, the context was totally different. A president trying to "wage a trade war" on China, stir up nationalist sentiment, distract from his responsibility to respond to the pandemic, constantly regurgitating conspiracy theories and other misinformation, constantly trying to distract from scandals, etc.
> Remember how you would get banned from Facebook for suggesting that the lab leak theory was a possibility?
The amount of misinformation about COVID was and is extreme. Yeah, they moderated their platform, which is under intense congressional scrutiny, in the middle of a once-in-a-century pandemic. Even so, I think you're conflating the bio-weapon theory with the lab-leak theory.
> Then major social networks and the medias reversed their positions. What changed in the meantime, other than the president?
Major social networks and medias didn't "reverse their positions"...we learned more, we're still learning more. What changed in the meantime is so, so many things lmao.