Yes, the size of those vehicles is definitely a factor. No alignment is going to account for the truck headlights being the same level as your eyes. Misalignment is definitely a thing though. Particularly with lifted trucks and the lack of auto-leveling when carrying a load. This affects halogens as well

But I think a lot of the blinding you see day to day is actually illegal HID/LED retrofits in reflector housings. Factory LEDs are not nearly as bad as those Amazon LEDs in reflectors.