There are many countries besides Nigeria where English is an official language, elite language, or widely taught. And language proficiency apparently has little to do with Scrabble success at pro levels where success depends on memorizing an obsolete dictionary’s words (apparently even including not really-real words, to the point where I believe someone won the French Scrabble world championship or something without knowing any French beyond the memorized dictionary words).
There are many countries besides Nigeria where English is an official language, elite language, or widely taught. And language proficiency apparently has little to do with Scrabble success at pro levels where success depends on memorizing an obsolete dictionary’s words (apparently even including not really-real words, to the point where I believe someone won the French Scrabble world championship or something without knowing any French beyond the memorized dictionary words).