Surely, some portion of users didn't follow the instructions. But I think that the reason people have an issue with it in general, is that it even requires instructions. People don't want and shouldn't have to think that hard about keeping a gun running. Additionally, any lube that has the potential to become a failure point, has serious issues.I hate to say it but I don't have much faith in the collective intelligence level of the firearm community so the fact people have problems with it doesn't surprise me.
I will concede that it does make you jump through hoops that other lubes do not but there is nothing wrong with it as a lubricant when used appropriately.