It has been proven plants feel pain right?
And also proven they can communicate with each other?
So what is left to eat since we already can't eat animals?
Wellllll.... plants don't have a Nervous system,
You can Argue, they feel pain in the sense that , they will repair damage to their external structure such as small cracks in leaves/branches.
And so, if pain is in service to life, and its propagation, then Plants ---sort of--- feel ---a sort of---- pain.
But it's not pain as animals perceive it.
--Pain to a cow/salmon/pig is virtually identical to humans.
As for EATING them.. Rights might not play a role here, because as long as there's a tangible benefit, SOME human will continue to exploit the animal.
But, ---overall-- health side, the Newest evidence is compelling on the side of animal foods causing the majority of western diseases.. (Not definitive)