It doesn't matter if it's manipulated or not, the strength is in privacy features. Already is helping the "little man" even in the UK, massive darknet markets have sprung up which is enabling subjugated classes of people like drug users evade the government
Privacy which will not be allowed if it ever to be taken seriously as a proper currency for a developed nation.
I'm not sure singing the praises of how it helps drug users carry out untraced transactions is really an argument for it though?
Bitcoin is a speculative plaything and, as you say, a way for shady transactions to be made with a modicum of anonymity.