What happened to the melanated hobbits?

I do love the unfortunate implications Hollywood making woke prequels to whiter settings always makes.
Why are there so many negroes and Indians in the Harry Potter game in the 19th century, but very few in the movies set in the 1990's?
Why are these harfoots so conveniently diverse and representative, but the Shire population thousands of years later is snow white?
 
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