I mean people won't like the idea but that's not my point; what you describe variety in superficial traits while maintaining common traits
Applied to humans; skin color, eyes, dwarfism, hypertrichosis... can still interbreed
When it comes to categorization and taxonomy in leaky abstractions like languages the boundaries get a bit hand wavy and usually land on whatever fits the prevailing social desirability bias of the day
I mean people won't like the idea but that's not my point; what you describe variety in superficial traits while maintaining common traits
Applied to humans; skin color, eyes, dwarfism, hypertrichosis... can still interbreed
When it comes to categorization and taxonomy in leaky abstractions like languages the boundaries get a bit hand wavy and usually land on whatever fits the prevailing social desirability bias of the day