I think we should be able to talk about ideas independently of the people who are talking about them. A speaker's biases have no bearing on the actual merits of the idea.
However, these people are proposing a "new axiom set" of sorts, where lives now have the same utility as the possibility of saving life in the future. Ethical principles have no further premises and are derived entirely from one's ideas and feelings. The ideas and feelings here are obviously biased. I think we should look critically at ideas that spring up from biased people.