The point is whether they exist conditional on us taking a particular action. If we do X a set of people will exist. If we do Y, a different set of people will exist. There’s not usually a reason to privilege X vs. Y as being “what will happen if we do nothing”, making the people in X somehow less conditional. The argument is “if we do X, then these people will exist and their rights (or welfare or whatever) will be satisfied/violated and that would be good/bad to some degree; if we do Y then these other people will exist, etc., and that would be good/bad to some degree.” It’s a comparison of hypothetical goods and bads—that’s the definition of a moral choice! So saying, “all these good/bads are just hypothetical” is not very helpful. It’s as if someone said “shall we order Chinese or pizza” and you refused to answer, because you can’t taste the pizza right now.
The point is whether they exist conditional on us taking a particular action. If we do X a set of people will exist. If we do Y, a different set of people will exist. There’s not usually a reason to privilege X vs. Y as being “what will happen if we do nothing”, making the people in X somehow less conditional. The argument is “if we do X, then these people will exist and their rights (or welfare or whatever) will be satisfied/violated and that would be good/bad to some degree; if we do Y then these other people will exist, etc., and that would be good/bad to some degree.” It’s a comparison of hypothetical goods and bads—that’s the definition of a moral choice! So saying, “all these good/bads are just hypothetical” is not very helpful. It’s as if someone said “shall we order Chinese or pizza” and you refused to answer, because you can’t taste the pizza right now.