I have no clue why someone would rate this a zero.
It's not amazing...but it's not a terrible song. Some parts are really quite entertaining. I would rate it a little higher but I think you've got more potential than what you're showing here. Good use of bitcrushing as well. The phasing/panning effects are extraordinarily well executed. Again - saying this is a zero is really a dumb thing to conclude. Good work here.