The location allows for contamination of the most fertile farmlands in the country, pollution Westward via the Mississippi River basin, and pollution East and South by wind. I can't think of a better location if your goal is to impact as much of the population as possible.
As for evidence, we have no evidence that the vaxx is a bioweapon and not just some colossal fuckup by greedy pharmaceutical giants, but we still think it because that's where the logic leads.
Good summary. I'd add #4 that the jab was being pushed so hard with so much emotional manipulation to people who had proven not to be at serious risk. That was a gigantic red flag.
It wasn't "Here's a product if you think you're at risk." It was "GET JABBED OR YOU'RE A GRAMMA MURDERER!!1!"
Well now that's just dumb.