Pete,
First, I never claimed to be a doctor, real or imagined. Please don't imply I did. BTW, the "REAL Doctor" was intimately involved in developing the RDP, of course he believes they are "just great." In all fairness to him, I don't believe he used that term.
I never said the RDP is dangerous, I said it scares me. I have reasons, but no evidence. Some folks are scared of the dark, others are scared of sharks. I'm scared of the RDP. Seems most DCS hits happen when making repetivive dives, especially on multiple days. In the late 80s, when this was getting lots of press, PADI was publishing US Navy tables with "PADI" printed on them. There were several law suits against PADI at the time for publishing "unsafe tables." At that time, ABC news aired an investigation into the situation. I felt (I still do) PADI got a bum rap in the program. People were claiming to be "well within" the tables when they got bent, but they were pushing the tables to the limits. They were within the limits, but they were diving them very aggressively, not something PADI advocated. PADI was not to blame for them getting bent. At this time PADI came out with the RDP, in fact it was mentioned several times in the ABC program.
People were rarely getting bent after a single dive, they were more commonly getting bent after repetitive dives, so what did the RDP do? It reduced the NDL for single dives and increased the NDLs for repetitive dives. Yeah, that scares me. Is it safe? No dive table is safe. Is it safe enough? That's a decision we all have to make. Other tables readily available have shorter NDLs for single dives as well as repetitive dives. They are, by definition, safer than the RDP. Are the overly conservative? Perhaps, but I prefer them, they don't scare me.