Some people seem to feel that anything less than a detailed recital of who put what where and how hard whose hair was pulled is a DADT. I disagree.
I think that where a lot of confusion seems to arise is in the difference between privacy and secrecy. Secrecy is where one partner deliberately hides something from another partner, whether by agreement as part of a DADT or while cheating. I don't think secrecy is healthy, therefore I don't think DADT (by my definition) is healthy.
On the other hand, I think that privacy is healthy. The exact goings on between me and my partner are nobody else's business, so long as any other partners know I exist. Sure, they need to know, in general terms, that we are or aren't sexually active, etc, but the details of what we get up to in bed are private up until they impinge upon the health of the other, eg safe sex practices.