I recently viewed several articles and video posts by the "wolf of wall street" Jordan Belfort.
https://www.youtube.com/results?search_query=jordan+belfort+bitcon
They are worth watching. Unfortunately, he does not seem to be on DTube yet.
Overall, I think there are some major differences between the pump and dump scenarios of OTC (over the counter) stocks and cryptos. The main difference being that many pump and dump scenarios never intend to do anything except sell stock.
Unfortunately, the same can be said for many cryptos. I think most people are aware of this now. What is more difficult to understand is how 'legitimate' companies can be used by powerful traders to rip off investors. "Pump the price up then dump the stock" scenario can be done to legitimate companies by illegitimate players leaving you holding the bag. Belfort explains this scenario as he sees it being applied to bitcoin.
I think he makes a great contrarian case to the bulls and an informed investor should here all sides of the story. It is very possible that bitcoin and other cryptos will be abused in this fashion many times before becoming more stable.
@johnadams