If ants and beetles are sentient, then CEV should take their preferences into account.
No it shouldn’t.
Elaboration: Your ‘should’ claim indicates both that you have a preference for CEV (if not all then at least up to the inclusion of ants and beetles if they are sentient) and that you assert it as a tribal norm. Many others don’t implicitly instantiate CEV in that way and instead instantiate it to CEV. The most common favored group being ‘all humans’. To those people your unqualified assertion would be interpreted as false.
No it shouldn’t.
Elaboration: Your ‘should’ claim indicates both that you have a preference for CEV (if not all then at least up to the inclusion of ants and beetles if they are sentient) and that you assert it as a tribal norm. Many others don’t implicitly instantiate CEV in that way and instead instantiate it to CEV. The most common favored group being ‘all humans’. To those people your unqualified assertion would be interpreted as false.
I addressed this point in my original comment.