Well part of the reason is that some ignore the data presented by actual users. For whatever reason those that dislike Neptune or the SKY light believe those who actually own them, and report their experience, are somehow paid to do so. I've seen this on another forum with just as toxic of a thread believe it or not. Someone posts something positive and the wolves come out to say they are lying, or didn't purchase the light, or a slew of other things. Oddest thing really.
If there is something specific that you want answered there are a few here that actually own, and run them.