How did I move the goal posts? I was talking about the phase of trials they are currently in. You changed the subject by bringing up the first phase trials. You said I claimed there was no control group, I said no such thing. I said without a control group they could not establish anything about the safety and efficacy of the vaccine. Your confusion, straw man argument, and misunderstanding does not mean I am moving goal posts or "clearly wrong".
If you don't understand the context of a conversation that you insinuated yourself into, ask questions, don't change the subject.