I teach resort courses, amongst other things, for a living... but I am fortunate to work for a dive centre which believes in safety first and money second.
I am well aware of the fast dollar roll-em-in, roll-em-out resort courses, and I dislike this approach immensely, but for the most part they are conducted without serious problems. The DSD is a good marketing tool which works really well - at least 3 (that I know of) former DSDs of mine have gone on to become instructors, and many upgrade to the full open water certification.
There are always going to be the nay-sayers who will criticise the concept as "diving-lite" and unsafe, and on the other side of the coin, there are indeed dive centres which put the almight dollar before safety in the hope that nothing will go wrong.
Taught properly and conducted by a good instructor, they can be awesome, indeed life-changing experiences, but I wouldn't do it if I didn't think it was safe and also really cool.
It's not for everybody, but as a number of people on here have already attested to - they did a DSD, got hooked, and started diving. It would also appear that these folks are very much still alive.
Have a good look around, talk to instructors and guides, get information from Scubaboard, make sure you're comfortable with the process, recommend schools and instructors with whom you have first-hand experience. If it was really so unsafe, there would be bodies floating into the bay by the thousand, so clearly it's not true - but there are shops and employees out there who shouldn't be operating, so a little caution is required.
Dive safe, and if you love it, live it.
C.