In my experience, the people who subscribe to type 1 are afraid that a potential Mozart or Beethoven won't reach their full potential because of bad habits and bad instruction. And the people who subscribe to type 2 are afraid that some kid won't have the pleasure of making music because they can't even start making music for years under strict type 1 tutelage.
There are many more people who never make music because it wasn't fun when they tried than potential Mozarts and Beethovens.
There are many more people who never make music because it wasn't fun when they tried than potential Mozarts and Beethovens.