Yes, block pricing makes sense. Prices are SUPER valuable as are other market dynamics! The same should be used for electricity and gasoline and many other things.

But the free-market dogmatists aren't interested in using markets and prices effectively, they are interested in their self-concept as people who really "get it" and understand all the complex dynamics of economics. Once you let messy ideas like externalities and market-interference/regulation like block pricing and on and on and on… this becomes very threatening to their identity as it pushes them toward having to say "gosh, it's so complex, and I don't understand it all".