Cash issue indicating corporate governance problem and cooked books is different from Cash issue indicating lack of financial understanding/ intelligence. I can answer the second one.
Based on Interest rate parity
INR Risk free return = USD Risk Free return + USD Appreciation + USD Risk Premium
They are taking Four way disadvantage due to which the issue looks overblown
1. They have INR loans which is higher rate than INR risk free return
2. They havent invested USD in govt bonds ( not sure, but seems so)
3. INR hasnt depreciated last year. This is just in hindsight mainly because of Oil/Modi/Fed.
4. They are in a way paying risk premium for being invested in a safe haven USD
Yes, the arrangement is not optimal, but this is true with many companies.Apple was criticized for many years as well as Infosys is still criticized for not being efficient in cash management.
Sorry for 3 posts in quick time, no intention of further carrying out as I have uttered all information i have on the subject