I think kbog’s point is that Greg appears to be comparing ‘person x going vegan’ with ‘person x donating $y that causes z other people to go vegan’. If going vegan has other benefits, e.g. environmental benefits, those will happen either way and don’t effect the comparison unless we have reason to think person x going vegan is particularly valuable compared to a random individual.
I think kbog’s point is that Greg appears to be comparing ‘person x going vegan’ with ‘person x donating $y that causes z other people to go vegan’. If going vegan has other benefits, e.g. environmental benefits, those will happen either way and don’t effect the comparison unless we have reason to think person x going vegan is particularly valuable compared to a random individual.
Ah of course, I understand now. A big oversight on my behalf, thanks for clearing that up!