You didn’t happen to take up that stance after listening to Joe Rogan’s podcast last month where he “discovered” a study he thought exposed the dangers of “leaky vaccines” by any chance?
This guy’s podcasts seems to be particularly referenced by people I’ve heard expressing anti-vaccine/pro-ivermectin views. They describe having the vaccines as ‘putting sh*t in my arm’ which seems to be terminology he uses in the brief clips I’ve heard.