Are there any pilots who have flown nose-in and had a crash or near collision because of an incorrect left or right pitch?
Other than being able to say "I fly nose-in without incidents," why not fly nose- out, or even sideways, if that suits you? I cannot see any real benefit to a particular flying style other than nose-out for those who want to fly but don't have time to perfect nose-in, or are not seasoned pros and never will be. Thanks to technological advances, novices can fly and do so safely.
I know some say that you should not fly if you don't master this or that by practice so that it becomes a reflexive action. Again I point to technological advances which allows the weekend pilot to enjoy a good hobby without incidents. Good for those who want a reflexive response to everything. A neat feature of a DJI Phantom is to just let go of the sticks and your bird will eagerly wait in place for your next command. If I were wanting to go beyond the hobby stage, then I agree that you should practice, practice, practice and gain those reflex actions otherwise what's the point?
I agree with flying nose-out and leaving the YAW control untouched if you want to fly with minimum experience. You can fly to a place (let's say to frame a photo), do whatever YAW is required for the photo, and then put the nose out before returning. This is a safe, conservative approach for less experienced pilots.