It's easy for the media to stimulate the minds of the people and letting them believe that they already have found the solution in stopping bitcoin's long-reigning volatility in its markets, by publishing a single report without any substantial evidence that market manipulation is indeed that cause of all the market's volatility. I think that manipulation plays a part in volatility but it's not the only cause of it: there are other more plausible reasons that dictate volatility, and one simple fact is that bitcoin is a globally-open market without any restrictions as long as you comply with the prerequisites on an exchange, and then you can start trading freely. As for the previous rise to ATH, it can heavily be attributed to FOMO and public hype once one of the deemed 'psychological barriers' were broken, with also manipulation at the sidelines of course.