Americans just buy much bigger vehicles than necessary.
You might have missed this part. My round bales are 1000kg, and the field gets wet. How do I move the goats? How do I pull someone out of that ditch where the sign says 15mph but every winter they slide through my fence?
Though yes obviously if you have an actual working farm, in any capacity, you need a truck that can tow trailers with decent weight on them.
I have noticed truck ownership patterns vary with region, which may be why some people bristle at the notion that vanity-driven truck ownership is common. It's extremely common in the Midwest, city suburbs are full of people who bought an expensive truck either because that's the purchase that'll get them positive attention from their peers at work or in their friend group (and because other options for show-off cars might get them ribbing instead of kudos) or for aspirations they'll never fulfill ("yeah, I'll totally tow a boat to the lake every weekend! Maybe I'll even buy a fifth-wheel camper!" then they end up doing it like twice a year and never buy the camper). It's less common in (at least large parts of) the Northeast. The "I have a nice car people may comment positively on or otherwise approve of" purchases here swing more Volvo and Audi and such, even out in what the locals consider the "country" (it's... not, LOL).
[1] Where are the goats being hauled? Just on your property, between fields? To somewhere farther away? On roads? How far on roads? Truck still might be the wrong tool, or at least not better.
Yes people on farms need big vehicles. We're not talking about them.
In almost no situation are pickup trucks, SUVs, or even a crossover the correct kinds of vehicle.