Well said!
I learnt to fly in the chippie at Swinderby back in the day. Grow bags and domes were part of the process of introducing candidates into the stream for fast jets. It was to acclimatise you right from the start into the military kit and way of doing things.
I see no benefit in flying a chippie or any other light aircraft kitted out in the same gear. Rather I just see it as catering to those with the failed schoolboy dream of being a fighter pilot or Biggles. If GA flying was that unsafe then we should give it up!!!