I think it is not about market manipulation anymore. It is about people's foolishness! One someone popular saif negative about Bitcoin, people will usually sell their coins without doing some research if the statement of that popular person is true. People tend to idolize other people who achieved something that they didn't.
Nope,
it is totally manipulation with a little bit of foolishness inside it.
the price won't make that kind of movement if nobody did that,and it also won't make that kind of movement without people's greed and foolishness.
usually an idiot won't make any movement because they are too hesitant to do something,but once someone triggering them.
they will make a move based on that signal.
so of course it's all about manipulation.