That was one guy among many who was allowed to speak to the committee. Nobody else came close to the kind of claims he made.
The bottom line on this denial, is that there was too little data to support it (Pfizerdid a small study of about 300 people, only 12 of whom were 65 or older). The system worked, and it was open to the public.
I think you didn’t watch the video. That was one guy with many supporting documents.
There was another person at around 4:09:45.... and another after the guy the link takes you to I think he is the one after the guy the link takes you to. I haven’t even watched the whole thing and I’ve randomly stumbled upon 4 similar testimonies