When you are an outsider it's wise to take such claims with a grain of salt, because as the "secret" made its way to you, recounted by one person to another to another, there might have been an exaggeration, over-simplification or misunderstanding.
It's easy to imagine how, in the hands of tech journalists and youtubers optimising for clicks, "Google likes QUIC" and "Some ML clusters use infiniband" could get distorted into several faangs and the complete elimination of TCP.
