We can take it as an axiom. I believe that enslaving animals and causing harm to the biosphere is just as bad as human enslavement and genocide. I believe such an axiom is the only moral one.

It's not just our supermarket. Our entire society is based on the genocide of animal species and destruction and violence. It is the most sick society and disgusting thing I have ever seen, on the level of the atrocities of all of human history.