i think this can go either way. it depends mainly on how realistic the people making this documentary are and how important facts are for them compared to unrealistic hype. if thy get caught up in the advertisement and the hype we may end up seeing a misleading documentary instead.
i also hope they don't focus ONLY on price! there is a lot more to altcoins than just price despite what 99% of the pump and dump ones are showing us.
Yeap. I hope they would find the perfect balance between showing the positives and showing the negatives. Showing slightly a bit of the money some people made(not too much to make too much hype), and showing the humongous amounts of scams as well. So people who are willing to enter the cryptocurrency space wouldn't get too turn off-ed, and at the same time, not too overconfident on the potential money they could make.