Interesting thread.
I think the underlying problem here is that this IS a bird forum, hence the name. MOST people on here, myself included, see this forum as a place to discuss all things birding. After all, you'd think we all share a common interest - that of WATCHING and PHOTOGRAPHING birds.
The optics threads are, by design, setup to discuss optics for the viewing of birds.
When a new post is started that implies that the poster finds amusement and some sort of sadistic pleasure from shooting birds, it is not too much of a surprise that the reactions start to roll in.
If I live to be 150, I will never understand the mindset of someone that gets their kicks by killing the fauna we share this earth with. Totally mind-boggling. I understand though, that these things do go on. But I don't expect it to be discussed on a birding forum.