To use a musical analogy, it's as if a country adopted a convention in which the only acceptable singing were Bass and Baritone. Singing low would mean singing Bass, singing high would mean singing Baritone. Tenors and above would be regarded as just screeching, not singing.

I think that would not be a country with a musical culture that was wholly above criticism. (And I'm not suggesting that people who were happiest singing Bass should feel obliged to sing Tenor, or anything like that - just that the range of singing voices is a bit wider than just Bass and Baritone.)