Because those “drawbacks” are not drawbacks but rather differences: not only we hear things differently (for example 10 db of bass can be loud for you but quiet for me) but we also like different things (you might like loud bass, I might like quiet bass). The way these elements are described can make them sound like they are drawbacks, but that’s just the reviewer’s opinion.

On, it’s for video games and it disables itself if the game doesn’t support it.