I agree with your concern, which we briefly address in footnote 144:
Why single out classical liberalism and Enlightenment principles and not, say, utilitarianism or the core principles of effective altruism? While we’re fans, classical liberalism seems to have several advantages. [...] The procedural principles of classical liberalism (like rule of law, separation of powers, etc.) are also fairly concrete, while EA is more abstract, open to interpretation and may even run the risk of becoming fanatical itself. [...]
Thanks!
I agree with your concern, which we briefly address in footnote 144:
Thank you! I thought I read fairly carefully but I missed that footnote.