"So, 1) this was from 2019 and for kids older than 5."
Yes, not the same study, but about the same vaccines.
"2) there were 4,000 per age group. (not the 3 kids the op insists on)."
Keep reading and see how they divided them up and how many they disqualified early.
"3) Where did you read they "waited" 84 days? They reported at regular intervals, the longest being 54 days."
You gotta read the whole thing. They didn't report for the first few weeks, then reported 84 days later.
"4) where did you get this nonsense about 300+ of the group took vaccines outside of the study? The only ones who would do that would be the placebo group- AFTER the study was completed because they should get the vaccine."
You gotta read. They state it plainly in the page I linked.
"Gonna repeat my question: why do you do this?
You are either repeating things you were told (but won't go verify) or you're deliberately lying.
Which one is it?"
No, I read the study. Please do the same and then apologize for your lies.