If you mean warming up your car by idling before you drive off then yes, that advice is rather stale.

First, by idling you only warm up the engine, oil and coolant. By the time you drive off your gearbox oil is still cold, as are the driveshafts, CV joints, differential, and your brake fluid.

Lots of new cars have something called a cold start where for the first minute or two they run very rich, burning excess fuel to get the catalytic converter and exhaust up to temperature as quickly as possible for emissions reasons.

You definitely should warm up your engine, but strictly before starting it and not by idling it (i.e. use a block heater). This is because it takes a lot of time for the engine to warm up when idling without any load.