Neither do you.
But, I suppose when you are all out for social justice the rules change and you can rightfully judge anyone because you are a self-righteous dickhole.
The logical consistency of one's ethical positions, however, is very easy to judge.
Being ok with slaughtering animals for food, but not for sport, but only for sport in special cases, except when the animals slaughtered for sport are commonly thought of as "pets", is logically inconsistent - or "hypocritical" in short.
It's ok to be hypocritical, but at least have the humility to cop to it rather than justify it. "I don't mind slaughtering cows because I like eating cows" is hypocritical, but it's at least true - whereas the flimsy justifications for why one is "right" while the other is "wrong" are just irrational nonsense.