Wasn't arguing that you were wrong, just noting assertions. I tend to start the engine, then start driving, this based on vague memories of it being a better drill in newer vehicles. When it starts to get down to zero F or so, I wait a little while.Don't need references when you use reason. A cold engine needs to run rich as low temperatures limit the rate at which the fuel atomizes. Carberated engines run rich via a choke mechanism, even then they need a bit of heat to improve fuel vaporization. Generally a hot intake valve will take care of this.
Modern high pressure fuel injection systems automatically ajdust mixture based on coolant and air temperature. But more effectively they provide finely atomized fuel with a lot of surface area that naturally vaporizes faster than the fat globs of fuel provided by a carb.