I have two people on my team who are both in their mid-20s. Both have had covid in the last couple of weeks, one hadn't had his vaccine the other only his first dose. The one without ended up in hospital for 2 weeks and was very nearly intubated. The other had a mild cough and has happily worked through it. I know which one I'd pick.
And without in-depth diagnostics to know both parties health state (not just shallow visual "they look healthy/are active") then you're making huge assumption as to if it was result of vaccine or not; and that ideology, lack of critical thinking, is why society is in the state we're; this will get downvoted too if it gets any exposure, another sign society is askew - because I'm correct in my statement but people who are ideological don't like being proven wrong.
But based on statistical evidence alone, borne out by millions of data points, not a single solitary anecdote, the vaccine works to protect you from the worse of COVID if you catch it at all.
You decry a "lack of critical thinking", but don't apply any yourself. It's just a cudgel to you to use against people who don't agree with you. Consider the simple fact that you may be wrong.
And look at you, boosting every huckster claim but ignoring the one thing that is shown to work on a large scale. Would it soothe your feelings if we just said the vaccine was an ivermectin hcq cocktail?
Because it looks like you want to "them" to be wrong more than anything else.
From an individual point of view, where are you going to go for a in-depth health assessment? Presumably the same doctor who would recommend in the strongest terms that you get the vaccine unless you have a history of certain clotting disorders or are using particular medication. Unless you seek out a doctor on the fringes of established medical fact.