While I essentially agree, the attitude that millions of living creatures are raised and killed in industry so what does it matter that one cat is stressed doesn't help anyone.
Disregarding food waste, farm animals are raised for food and work to produce sustainment for society. At the minimum, their deaths help sustain our lives. This cat wasn't thought of as a monetary gain for the family until only after it became "famous", as the article states. That is when the family started showing it off for entertainment and as revenue.
Take this another way, why should the one girl complain I groped her breast on the train when there are thousands of girls being traded for sex across the world and even country? What's one girl got to complain about when others have it worse?
There are degrees of things. In this case, they are all wrong. Because A is worse than B doesn't make B better, it just makes A worse than B.