This guy seems to want Fauci to take him by the hand, prick his finger and run the sample to CVS for him. Dude, whatever happened to human agency?
Not at all. Fauci's advice is wrong. There are some people who don't know any better and they will take his advice not to get an antibody test, before they get a shot. The writer is simply pointing that out.
If that's the point the writer's trying to make I hope he isn't relying on his writing skills to make a living.
The article didn't get within hailing distance of that explanation.