You make a good argument and I agree that those kind of pumps (McAfee) exist, but nothing you said was factual. Even the biggest pumper McAfee, if you look at the coins he tweeted they are still up massively from where they were even after the dump. We can't even say that anything in crypto is a pump and dump yet because it is all speculation and everything is pumping anyways, whereas the stock market you have companies that have had negative millions in revenue for years. Also the US stock exchange market cap is 28 trillion and the cryptocurrency market cap is not even 3% of that at 800 billion, so there's no way crypto manipulation moves more dollars as the stock market does. Shorting (selling stocks you don't have) and margin trading (trading with money you don't have) is deceitful and manipulative.