First of all, it was half tongue-in-cheek (hence the smilie). People who want to offend, or troll, don't go on explaining their thought process. It was a joke, especially with some CRNAs calling themselves "nurse anesthesiologists".
Second: Association rarely means causation, especially with n=1. That is Evidence-Based Medicine 101.
Third: If you're a physician, you should know basic physiology and immunology. It's not rocket science, it even can be googled. I honestly can't understand where one could get the idea that a vaccine would induce immunodeficiency in a young healthy person.
These are also for all the geniuses who liked your post. We should have much higher expectations from other anesthesiologists. We are not CRNAs. This is one example why almost nobody gives a crap on us as physicians. We used to be among the smartest doctors in a hospital, we used to run the ORs, now we're seen as the intubators and propofol pushers. I'm more disappointed with this forum every day.