Early-to-mid 2000s anime often relied on exaggerated, stereotyped design choices for Black characters in limited side roles.
More recent series have moved toward fuller character writing and less exaggerated design, particularly in shonen action titles.
Improvement varies significantly by studio and genre — no single claim that the industry has "fixed" this holds up across the board.
Generally yes in recent years, particularly in shonen and action genres, though the shift has been uneven across the industry and older stereotyped patterns still appear in some newer series.
This has been attributed to a combination of limited diversity within Japanese animation studios historically and reliance on exaggerated design shorthand rather than individualized character writing — a pattern that has been openly criticized by both fans and some creators.