Fuel wasn't absolute trash, and neither was the traffic horrendous. Fuel percolation is very real with E10 blends, and there is a reason very few if any carbureted vehicles are on the highway anymore, because owners don't understand how to make them reliable. There is also this idea that cars didn't experience 'vapor lock' or have issues in traffic 'back then', and they absolutely did.
Great post. Yes, that's absolutely true. What a lot of folks don't realize, is that OEM electric fans on modern vehicles, they may draw anywhere from 30-50 amps during operation, with spikes sometimes exceeding 60 amps on startup. Look into the dual fans that you'll find on a modern F150 for example, again, they pull a massive amount of amperage, well over 60 amps, and would require a soft-start controller (or fan controller) on a classic vehicle.