Frankly this entire argument reminds me of how people scoffed at Birth of a Nation
because in many scenes you couldn't see people's feet or legs. It was a completely ridiculous way to shoot scenes, as obviously films should look like stage plays.
If your objection to 48 is that it doesn't look blurry and it looks too real, then I have no idea what to say to that because that's kind of the entire point (and also a good thing).
If your objection is, in the case of the Hobbit, this higher resolution makes the fact the film is fake appear more obviously fake, that sounds more like a problem with the movie, and one which I doubt blur would fix much if at all.