I don’t think ‘tautology’ fits. There are some people who would draw the line somewhere else even if they were convinced of sentience.
Some people might be convinced that only humans should be included, or maybe biological beings, or some other category of entities that is not fully defined by mental properties. I guess ‘moral patient’ is kind of equivalent to ‘sentient’ but I think this mostly tells us something about philosophers agreeing that sentience is the proper marker for moral relevance.
I don’t think ‘tautology’ fits. There are some people who would draw the line somewhere else even if they were convinced of sentience. Some people might be convinced that only humans should be included, or maybe biological beings, or some other category of entities that is not fully defined by mental properties. I guess ‘moral patient’ is kind of equivalent to ‘sentient’ but I think this mostly tells us something about philosophers agreeing that sentience is the proper marker for moral relevance.