I’m not generalizing as most of my life I practiced Mahāyāna teachings. They teach you how to eat and have sex to have insight into rigpa. Almost all Mahāyāna teachings especially dzogchen are nonsense and they are no different from hindu teachings at all but they use different names for the same things.
It’s better to not compare and to not bring any outside schools here and trying to fit them here in terms of anything right as they are not right at all in most cases.