Just about everyone has seen vehicles that smoke, only on startup.
I disagree with the text; haven't bothered with the video.
First of all no one here is stating extremes, such as warming up your car until it reaches thermostat open temperatures.
Second, the crux of this person's viewpoint is, you're likely to dilute the oil more, idling than driving, because it supposedly warms up quicker.
I suspect his viewpoint, fails to account for the fact that you're
1) injecting more fuel into a cold cylinder, (intentionally running rich,)
2) at vastly higher RPMs, (more fuel injected more often,)
3) while subjecting it to vastly higher cylinder pressures,
4) before engine parts have had a chance to expand and the piston rings provide a better seal. (why some cars only smoke on startup)
The absolute worse thing you can do to an engine is drive-off with no heat in it. Thumbs down.
Friction produces heat. If it actually warms up any faster, (per engine rotation,) it's probably due to less lubrication. (and more wear)