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Myth and lie.
You are absolutely not supposed to do that. In fact, you're supposed to do the opposite. Letting your car idle to warm up kills it faster because the oil pump isn't running because the car isn't moving.
The exception to this is:
A) when it's really freezing cold out, and then still not more than a minute (not "at least a minute". No more than a minute. 30 seconds is plenty in winter. To be clear, if it isn't cold out, this doesn't apply, and you shouldn't wait at all.
B) if your car is ancient, like with a manual choke or similar. Well over 40 years old.
C) if the manufacturer says so for that model.
That is absolutely not true. The engine runs the oil pump, so the pump is working as long as the engine is spinning, assuming the pump is not faulty, of course. I'm not aware of any car engine ever built where that isn't true.
That being said, idling your (modern) car for longer than a minute, or as long as necessary to defrost the windows in the winter, is a waste of fuel and, consequently, emissions. It's also an unnecessary wear on mechanical parts, but not because the engine is cold or hot, but simply because it's in use.
https://www.consumerreports.org/cars/cars-driving/should-you-warm-up-your-car-before-driving-a5580016349/