It comes with the territory and the objective needs of the society. A guy in the US can be famous world wide, travel a lot and still won't need to learn any foreign language. English is enough for him to get by in every corner of the world. A guy from Belgium can be familiar with the Germanic and the Romance languages, easily learn them and pronounce them correctly. A guy in Switzerland will probably speak German, Italian and French, easily learn English or Spanish too. For me Italian was very easy to learn, I learn English since a kid and my native language allows me to easily learn the Slavic languages.
Yes, Seven is 100% correct that a professional commentator should work on pronouncing the names correctly, or at least to be close, but I would give an excuse to an English or American commentator. Afterall he starts with a big disadvantage when put against a Belgian or a Slav.