Well, i think your family and friends might find it rude, because they know you very well, and maybe feel like that notice should be for a stranger or something. They don't think that the same rules apply to them because they actually know you. I personally don't think that it is rude, because...
From what ive read on the internet and heard from people, blu ray sucks. I won't be getting a blu ray player for a long time from now, like maybe a few years. The people who make blu ray are just trying to see if they can make people buy their product, so they won't feel like they are behind...