Pray tell, what the hell is wrong with that? To somehow choose a movie or director as the "best" and yet at the same time call them an art (inherently subjective) seems pretty arbitrary to me.
Oh, and it's spelled Basterds. And Tarantino. And Tarantino's best picture was obviously Reservoir Dogs (see I can be arbitrary too), or True Romance if you count his screenplays too.
We are a way for the cosmos to know itself.
Nothing wrong with enjoying a movie and rating it by how much you enjoyed it, but its not the best way to judge the work done.
Its like watching figure skating, you could like and enjoy the character with the strangest costume or with the coolest music to skate to the most, but that does not say anything about their skill level to perform their tricks or proficiency. It takes an educated eye in figure skating to appreciate more than just the costume and music selected, if that wasnt the case then Snoppy is hands down the best figure skater ever!
This is true of almost every creative and professional endeavor. There is just more to look at and judge than just what an uneducated observer can notice.
Yeah, its funny watching people get worked up and emotional over it, but the majority of those same people can take a step back and acknowledge that it does not mean a damn thing and smile.
