It sort of does make sense, since it’s how trains work so well! A single locomotive can haul dozens of carriages way more efficiently than putting a single small motor on each carriage. It also has way less aerodynamic losses since the trailer is right in the slipstream for the truck!
I feel like “weird” misses the mark. It’s quite hurtful to people who are outside the norm and proud of it.
“Creepy” is a way better description of those guys.