why some poor people don't hate rich people

they aspire to one day become a rich person, so they don't want to attack the rich because they see that as an attack on their future self

(of course, poor people rarely ever rise above their circumstances, but this attitude still persists regardless)

kill yourself frozenanus

This is true, but that delusion is the only way to keep the economy afloat. If everybody started getting blackpilled that they would never achieve significant wealth without inheritance (or extremely high IQ/luck), everyone would turn into a lazy bydlo.