Psychologically speaking, why are people so excited to talk about COVID vaccine booster shots? I have never seen people this eager and excited to discuss routine medical care in my entire life. It seems like an obvious example of politicization and virtue signaling. I have never in my life seen people discussing doctors check ups and booster shots in this manner.

Where I live (Burlington, VT), we have just started giving out boosters. Everyone at my school is already vaccinated, per state and university requirements, so it's common knowledge that we've all had the vax. However, today in not one, but TWO different classes with different professors, before class started, the professors proudly and enthusiastically announced to the class that they had received their booster shots. I have also heard family members talking about getting boosters and how they're all doing their part. It seems really weird to me. I have never heard people publicly discussing how proud they are to get the flu shot. It strikes me weird and unscientific, and it honestly feels a little too personal. I feel uncomfortable hearing people discuss their private medical details in front of me. It's all very partisan and tribalistic.

I support vaccines, but this does not seem very rational to me. (I do not support vaccine mandates, however.)