Either human is a special category with special privileges or it isn’t. If it isn’t, the entire argument is pointless. If it is, expanding the definition expands those privileges, and some are zero sum. As a real, current example, FEMA uses disaster funds to cover pet expenses for affected families. Since those funds are finite, some privileges reserved for humans are lost. Maybe paying for home damages. Maybe flood insurance rates go up. Any number of things, because pets were considered important enough to warrant federal funds.

It’s possible it’s the right call, but it’s definitely a call.

Source: https://www.avma.org/pets-act-faq

I did not mean to imply you should not anthropomorphize your cat for amusement. But making moral judgements based on humanizing a cat is plainly wrong to me.