Why does Dictionarry penalize AV1?

Trying to wrap my head around these configurations. Shocked at the quality of file I now have relative to the file size, I really wasted a lot of space on REMUXes that I might watch one time.

But one thing I can't figure out is why AV1 is penalized so heavily in Dictionarry's ranking system. It's supposed to be super efficient, right? Shouldn't it get a neutral ranking at best?