Right... Its the "...but think of the children..." aspect of this forum.
Fair enough. And just for clarity (and this is is in no way an endorsement or recommendation), I believe that correct* transition training is generally desireable for any pilot. But I also believe transition training is not always required. I know its asking a lot in this day and age, but I'm comfortable leaving it up to the individual to decide their own course of action.
* Correct Training - My very first Rocket ride was with me in front and the owner in back, without full controls. I flew the airplane just fine, but following the advice of the owner, the landing approaches were flown way too fast. I could not nail the landings without a bunch of bounces and long rollouts. Fast forward a few years and for my next Rocket ride, I was solo. This time, I did not have the bad information from the back seat polluting my head and was able to fly the airplane by listening to what it was telling me. Flown slower, the airplane landed just fine, and I wondered what all the trouble was about on my first flight.
There is a difference between good transition training and bad. The latter can actually hurt you in the short term.