Absolutely true but beside the current point of whether they are more or less in the way when parked in residential areas than our normal commercial vehicles.

"Let's drive around the hood to flex my Mercedes Sprinter", said noone ever.

These are strictly professional cars. When they are not "in duty" they're probably parked at a garage.

On the other hand, an American open truck driving/parked in a residential area is almost certainly some show-off.

You misunderstand - almost every tradesman here drives their work vehicle home and drives errands in it. Use of the company vehicle for commuting is considered a standard perk of these trades for regular employees - free fuel (fuel is way more expensive here), they can some days drive straight to the first customer (saves time), and might save them from getting a car (maybe the spouse has a microcar for their commute, otherwise biking and public transport are common).

Source: I live here and see it every day. Family, friends and customers are doing it, plus many eons ago I too was a tradesman driving home every day in the company work van.

(Heck, many companies wouldn't even have a place to park all their company cars at once, many such smaller companies run out of regular residential buildings with no dedicated parking.)

Good point; I should actually make sure to pay attention rather than reading "Sprinters are bigger" and applying that to my hatred of American trucks!