The article claims we all believe human life is precious for illogical reasons. Gasp! Comment section erupts in arm chair philosophy. All because they allowed the author to conflate formal system rigour with philosophical nonsense. That is, 'mathematically logical' and 'thinking rationally.' You cannot apply rigour to vague bumper-sticker slogans, they are trivially illogical. Almost nothing is completely logical in daily life. It's not a big shock. There is nothing profound about this. To assume otherwise is naive.
You say "It's about as close to objectively true as you can get." If by 'objectively' you mean 'extremely subjective to the human experience' then I agree with you. Otherwise, I'm not sure what you're on about.
What other experience other than human experience is out there?
I read that as you saying that "Human life is precious" is true, though maybe I have misunderstood. (Don't take this as that I agree with the other guy though).