Adults get to choose,it is called freedom of choice. The diver chose to ask to dive with the "Minimalist" divers and chose a path to seek the knowledge of zen minimalism.
Divers learned to dive and dove from their first dive without a BC for decades and some still do, I am sorry that in this airbag, padded, safety first world that divers are required to wear handicap devices that are of little use once a skill level has been developed. A BC is not a life preserver, it is simply there for buoyancy compensation, if you can compensate for your buoyancy needs via lung volume, proper weighting and attire there is no need then for a BC.
Repeat, a BC is not a life jacket, if you need a life jacket, get out of the water, remove your gear, go home, learn to swim or take up golf or something.
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