People who are earning bitcoins will be much satisfied with stable price as it will give them stable income but people who wants to make quick profits in trading will never like price stability.
That is true, people who have enough amount of bitcoin will never want to hear anyone saying there is anything unfavorable about Bitcoin. Though I have only a small amount of bitcoin but I still do not see anything that is least favorite about bitcoin. Bitcoin has always been perfect to me and will continue to do so.