People can think of other species as being morally as valuable as people and not be psychotic.
They can also chose the human in the trolley problem and still feel bad for the crab. If the trolley problem included people from my familly and strangers, I’d chose my family, but not because I think it’s morally superior. I would feel bad for the other people.
The line where compassion stops can be drawn anywhere. Many people draw it where their nation or race ends. Many people draw it at the elusive pet/food distinction. Many people draw it where being mammal stops.
I don’t think drawing the line is based on moral principles. It’s practical. Sometimes you need to eat meat, sometimes you need to fight in a war. But when it comes to morality animal lives are animal lives, no matter whether it’s a crab or a white male human. They’re either all worthy of compassion or non of them is.
So that’s my point of view. And thanks for your previous answer.