"Objectively" doesn't just mean a thing is a strongly held opinion or even widely held. This seems like a perfect example of a thing that is subjective, not objective. There is no objective metric for measuring the looks of pixel art. Or really any art in general.
Probably most people who care prefer this, but that doesn't mean it's objective.
This probably doesn't contribute to the discussion. But I have a personal peeve about people using the word "objectively" (and "demonstrably") when they really mean "significantly".
Carry on.