I don't particularly like Rip's methodology, but I don't agree. Deadlifting is pretty much the simplest movement there is - it is nothing more than picking something (which was specifically designed to be picked up) up from the floor and standing with it. It is the same basic movement pattern than the one-armed swing you advised (hip hinge) but with no ballistic component. I can't say which is safer, but anybody can pick up the correct movement in a few hours of training and it is definitely not more complicated than a kettlebell swing.
Also, starting people with deadlifts is fine, as long as you keep the weight low. Not to mention that if you had to choose, deadlifts would do a lot more for you than turkish get ups (which I've honestly never even heard of until now, and I've been a serious weightlifter for years).
(I often do them as a general warmup before the `main' lifts.)
Press, clean and jerk, and snatch are certainly complex, but deadlift not so much. Turkish getups are a great way for a beginner to drop a kettlebell on their head.
From my experience being a gym rat, a majority of beginners have decent deadlift form with minimal training.
I know its tempting to defend beliefs and I like Rippetoe as well. I have done starting strength. My point is just be open enough to listen to Pavels ideas. For Pavel its not about building muscle and adding weight, for Rippetoe it is. And there is a big difference. Pavel is talking purely about strength. Not adding to the engine, just making it run optimally.
[0] From Pavel on podcast listed in above comment.