Yes, because a website titled "PeTA Kills Animals .com" is the number one source for objective information.
It's an info-site. And it's backed up by reputable sources (go on their sources page). Oh, and news sites.
Anyway, I volunteered at an animal shelter for a bit. It always wrenched my heart out when animals were put down, but the vast majority of them got adopted. Hell, I got my dog essentially off the street. It'd been wandering for a few months, was massively underweight and had obviously suffered physical trauma (it's tail had been docked, despite the fact it's a mongrel, and, from what I'd been told by vets, it was probably without anaesthetic etc).
Ever since I've got it, it's been the loveliest pet imaginable. Sure, it has certain "bad behaviours" (it'll eat anything, even off the floor, and will try to get into bins to eat the food in there, we had to train it off eating shit, too), but otherwise it's perfect.
I'd be inclined to agree Aqizzar.
You both seem to be confusing cause and effect. A big organisation like PeTA puts down the vast majority of the animals they take it, a massive percentage compared to other animal adoption agencies, and these people think "HOLY SHIT PETA KILLS ANIMALS". And a site is born.