To clarify: I'm not talking about if pets in general can give emotional support to their owners, of course they can.
I mean should the concept of Emotional Support Animals get treated with the same level of respect and seriousness as that of regular Service Animals for the physically disabled.
Either way any system that allows people to avoid paying their landlord extra to have a pet or force their landlord to let them have one is a good thing. Landlords should get absolutely no say in whether you have pets, especially since you already have to pay for damages to the place.