Actually, I think every one talks about these things too much sometimes. You just have to go on cryptotwitter subscribe to coindesk or cointelegraph, and the bad news will keep pouring in.

• Wash trading, check!
• Insider trading, check!
• Scamming, check!
• Fake volume, check!
• Fake deaths, check!
• Mt. Goxxing, check!

The truth is, sometimes, the money will blind people with the opportunity to "live their dream life" and it often ends badly. But at the end of the day, it's not the 'exchanges' per se, that perpetrate these things - it's humans. For as long as humans, are tempted with greed, are weakened by desire, then things like these will continue to happen.