While he helped bring more attention to alt coins he also had no real understanding of what he was promoting. Many people got burned with the Quark pump.
Hopefully he gives an accurate, fair and informed presentation in his documentary.
Bill Still has a deep knowledge and understanding about the function of money. If you had watched any of his work and research, you would know he is a very outspoken critic of using money as a form to gain financial wealth instead of it's intended use as a means of transaction serving the public intrest, with extensive documented research on the subject. He is anything but an advocate of Pump and Dump schemes. In fact as recent as a year ago he was against BTC for that very reason:
https://www.youtube.com/watch?v=qDgnu5B1SJMOnly recently has he come around to crypto as a means of currency created in the goal of serving the public interest. Don't blame him if YOU took that as a sign to invest in any particular currency with the goal of realizing a quick profit. That is NOT what a real currency or his message advocating crypto is about.