The thing is he is unknown and has no fans who would rate him good. He only has GP, non fans. While pop stars have fans who will always give them high grades because they stan for them so they inflate ratings on itunes.
And the reason why it's hated on atrl is not because it's a bad song (quality doesn't matter here), it's because he is an unknown MALE singer and obvious one hit wonder. If he were a FEMALE he'd be having fans here already.
Bad blood remix is worse than this, see you again also. It's a nice chill track to relax and have fun, not to be taken seriously, plus it sounds very refreshing and like nothing else out.