I do not know that, It may or may not be true.
I know that those who do the most damage claim to be doing it for the most good.
Adolf Hitler was a big animal rights guy.
The way to He!! is paved with good intentions.
On this Earth, hard choices need to be made. Those who are unwilling to do what is necessary, suffer.
It is a self correcting problem, usually.
I know there are probably too many stray cats, but some communities have done a good thing; rounded up the strays, had them neutered or spayed and let them go.
They never asked to be born and don't deserve to suffer. We can and should help them.
If you don't believe most murderers have a history of animal cruelty, look it up. Anyone who would delibertly hurt an innocent, defenseless animal would probably be capable of anything.
Just my humble opinion because I love all animals and birds. they are God's innocent little creatures.