No, that’s not what sundvor says. They explicitly talk about the whole population (“everyone “), and I am pretty sure if everyone had to pull the trigger on their dinner, total meat consumption would absolutely go down, regardless of what a few hunters or farmers do.
Yep. I've only done so once, well my brother did the shooting whilst I held the rabbit down then helped prep to skin them.
Meeting the meat was also a reference to the Restaurant at the End of the Galaxy; there, the meat would kill itself. It forced the attendants higher up in the food chain to be confronted by the reality of the situation, rather than having the slice of meat simply something you get at the supermarkets in a packet.
In all seriousness, by reducing the amount of meat eaten you can avoid the worst meat factories with their horrible conditions for the animals.
I believe organic farming is far more ethical, and better for the planet as well (methane emissions) as for the consumers who are likely to be overweight.