I voted not *needed* to train a dog - but like many others I have no problem with a choke collar being used correctly in appropriate scenarios.
When I started training for the obedience ring (before I got Charlie), I was in a 4-H group that received free weekly lessons from an obedience judge. This lady usually gets $2-300 for a 6 week course, so 1 hr/week indefinitely was amazing, lol!
My dog, Max, was a very soft Standard Poodle who would have responded so much better if I had done away with the choke chain completely... fortunately I realized that I could use the sound alone as the correction so he rarely felt anything, and I used my voice almost entirely.
When I got Charlie I was growing a show-coat, so he rarely wore a collar or leash - all training was positive reinforcement. In the ring he wore a thin slip chain (similar to choke, but not meant for giving corrections). When he wore a collar it was rolled leather, nothing else. I tried Max's choke chain once when I took Charlie to class and it was awful - I gave a very mild correction and he shut-down completely, refusing to acknoweledge my existence until I removed the collar.
Charlie doesn't mind a martingale, but I generally just stick with the rolled leather or nothing.
It wasn't until I went to college and trained service dogs full-time that I learned that it is entirely possible to never give a correction when dealing with a relatively soft dog. Max passed away to cancer before I finished school, so I never got to try it out for him
I think that any tool is dangerous and bad in the wrong hands, but that any tool is safe and effective in the right hands. For myself, I prefer to only use buckle or martingale collars, regular leads (no retractables), a pinch/prong if a dog pulls too much, and a head halter for fearful/aggressive/or obsessive dogs. Citrinella collars work nicely on most dogs too, but I prefer them for barking etc when a person shouldn't be involved in the correction.