Corporate medicine is the enemy here. There's a reason Obamacare tried so hard to eliminate private practice. People, and doctors are people, are easier to control if they are worried about losing a paycheck if they don't toe their employer's approved line.

When I got out of the hospital 18 months ago after my COVID bout, the (corporate employed) pulmonologist kept telling me at my followups I still needed to get the shot. He first tried to tell me it was an "added level of protection" but wouldn't give me a more detailed answer when I pressed him about the mechanics of how the immune response would work in that case. It was very clear he was uncomfortable and I could read between the lines from his anxiety that he was giving me this advice because he was told he had to do so, not because he actually believed it. So I asked him point blank and he smiled and said, "Yes, it's the position of Methodist Hospital that you should get the vaccine." That's all he would say. I actually felt sorry for the guy.