as rude as it feels, it is pretty standard here. a lot of places - especially larger companies - really don’t place any emphasis on team bonding outside of work. they might do an event every now and then for everyone, but there’s really not any focus on coworkers being anything but professional to each other. so usually, people will just go eat with those they consider closer friends instead. it’s rarely done out of malice or distain for coworkers, we just have a weird work culture here.