they don't have to. It's cheaper to do this. The reflector dose a decent job in FCO and SCO, it's just that streak that's the problem. And if the drop lens gets smashed, it won't affect the light distribution.
It was working when it came down,and I also tested it at later date.Some seem to have the neutral connected to the housing,just make sure you connect it the right way
I know, which makes me want to KEEP it there because he removed it and then the ballast fried. I don't think that would happen again but you never know.. xD