I think if bitcoin rose quite steadily and slowly people wouldn't look at the best cryptocurrency with an "evil eye". Going forward, do you think a slow steady rise, rather than a speedy erratic rise is good for bitcoin to get "accepted" all over the world? The sudden rise seems to scare people and governments.
There is no harm in Bitcoin rising rapidly. Yes it can become a threat to the banks which will make them feel there is a competition. However, TAU, BTC, LTC etc are facing a fair increase and are still being bought at a great speed.