Gary’s lack of understanding is not dependent on other people.
Only Gary is in charge of his understanding.
Some folks are blindly patriotic.
Some folks offer reasoning, links, evidence, reality, etc., that gets ignored by folks like Gary, because it doesn’t fit their view, or it doesn't fit into their narrative that explains cause and effect for understanding that they convince themselves covers all the necessary variables, while important variables get ignored and the more they are ignored, the more invisible they become.
If important variables get ignored, like the A-bomb, it's not because one does (or not) have access to classified info, or because the bomb hasn't blown up. It's not because Trump could not state his singular purpose more clearly (Iran will never, ever have an atomic bomb). It's because the bomb is rejected by the selective narrative, as a valid reason for war, or in the case of Iran, a valid reason for The Reckoning.
Some folks are easily fooled by a sharp dressing narcissist out for number one. Obama had his two terms but sure did screw up the Democrat Party. Just look at the bad doors he opened ... racism, open borders, Iran, drone warfare which just has to make folks crazy. Just imagine unseen drones overhead all the time, and everyone in the vicinity of a surprise is just undocumented collateral damage, thousand and thousands and thousands of times.
Does anyone get used to that, or get over it?
Some folks are folksy.