There is currently a server-based protest against Reddit's lighthandedness with anti-vaxxer propaganda, with thousands of subreddits willingly locking themselves to make Reddit move because so far, the whole company hasn't moved beyond shutting one or two anti-vax subreddits temporarily.
On Twitter, anti-vax propaganda profiles have hundreds of thousands of devoted culti- erm, I mean followers, and all of which aren't being removed. Even Marjorie Taylor Greene, a notorious anti-vaxxer and anti-masker, had only ever had her account suspended for 7 days.
On YouTube, anti-vax channels continue to churn out their bullshit at a breakneck pace. Earning ad revenue while they do it.
If Biden was collaborating with social media sites to shut down anti-vax propaganda, literally none of that would be on their platforms. All they'd need to do is set up some key words and then nuke the channels.
Quit your bullshit.