1. It ain't just the pigs, and I'm sure not going to kill off an entire species just because of some gonzo religion.* I suppose you would kill off all the birds too.
2. It's not doubt a lot of hype, and little substance to date - but there are enough bad indicators that would dictate some attention be paid to it. Also, that does not mean that people in positions of power, authority or expertise should not be listened to, or prudent measures should not be taken.
* and to me, all religions are gonzo religions