Earlier quoted context omitted.
Sometimes they can be. A lot of times people without IFR enter clouds because situation is worsening - so after a few minutes, cloud/fog might reach ground, or you might fly to a place where clouds are lower. Other times, you get your airplane in a situation / position where, when you do exit a cloud, you don't have enough altitude to correct it. Some airplanes have various types of spins you can enter that you canno…
Even with all these explanations I'm still totally unclear on how flying in a cloud gets you an 86% fatality rate. It's difficult and counterintuitive, things can go wrong with instruments etc.., but what exactly makes a crash a near-certainty in this situation?
As per my previous analogy - people without explicit driving instructions and practice (you must build actual reflexes, not just theoretical knowledge!), will overwhelmingly do the wrong thing when they understeer or oversteer a car - a machine they may operate daily otherwise and still have full sensory inputs. Flying in clouds / entering a spin is exponentially more complex and counterintuitive and punishing :If that still feels incredibly unlikely, and please take this in the kindest possible way as an illustration and not personal :), that's exactly what kills people! The profound and pervasive unawareness of how dangerous the situation is, and just how much your body senses will lie to you and how much following them will kill you.
(fwiw, note it's not "sum total of all people entering the clouds results in 86% fatality rate", of course - airlines go through clouds hundreds if not thousands of times around the world daily! But for untrained people to enter a cloud, especially inadvertently / unplanned, IS deadly)