Not surprised to learn that they did some "Oh-shit!" efforts when they found out about the investigation. The fact that it's been going on since the start is not very surprising neither.
Hopefully they've REALLY made changes, but I'd be more inclined to think it's just empty talk. Same as with any other company where such a culture is pervasive. Talk is cheap.
And I cannot stress enough how much of a light this shines on the Afrasiabi situation.