These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crowning Moment of Funny: After Blackjack gets shot, he says "I guess I'm one of you now", to which the sheriff responds "don't count on it" and shoots him again.
Fridge Logic: How does Blackjack know the townsfolk are dead? He recognizes some as famous outlaws said to be dead, but surely the first conclusion would be that reports of their deaths had been exaggerated.
Fridge Brilliance: Everyone in that town is dead. Why can living people reach it? Blackjack's gang is implied not to be the first party to pass through. It must be to provide more temptation - the townsfolk have to resist the urge to drink and gamble despite the perfectly good saloon in town, but no one there would be willing to start a fight. Outsiders, not restricted by the threat of Hell, can challenge that temptation.