[ineptech]

That's the thing, I think you can. If everyone who donates to animal shelters felt as confident about it as you described, I don't think anyone would have a problem with EA. Certainly, no one is complaining about the idea of, between two charities who do the same thing, giving to the one who does it more effectively.

But there's a lot of complaining about the idea of comparing two different kinds of altruism. And the whole point of EA, I think, is that the fact that it's uncomfortable leads people not to do it at all, and prodding them to think about it feels like an attack.