That's not true. Most people equate hit points with wounding and/or a loss of morale, heroic luck or fatigue. Just because it's somewhat abstract and contentious does not give WOTC carte blanche to decide that the wounding now only kicks in on an unconsciousness blow. This is the same kind of handwavey argument based on reinventing D&D reality used to defend healing surges in 4E. Didn't wash then, doesn't wash now. Many will note that it doesn't match their understanding of what D&D is, and again declare another instance of "not D&D".
Uh-huh. Do you have to sharpen your razors to split hairs so fine, or do you order them special? Seriously, the healing and hit points as depicted in the playtest is still up for discussion. It will most likely be different in the next playtest packet. So take a deep breath; it's just a game.
You would think we were discussing politics, religion, or other matters of life and death; it's just not that important.