This is an interesting point of view 
In fact, the ups and downs are BOTH necessary for the market to discover how much it CAN go up and down. If it would go only up, nobody would know how much it would possibly go down, should it ever go down. If it would only go up, at some point it would possibly crash down to nothingness.
Yeah strengthening and weakening prices is a natural thing happening in cryptocurrency market. sometimes a weakening price is needed so that others users can buy and collect more bitcoin for the next pump. maybe the price weakening occurs because of the natural (demand and supply) or occurs due to manipulation. but the point is the declining price is a reasonable thing and may be needed by some users.In fact, the ups and downs are BOTH necessary for the market to discover how much it CAN go up and down. If it would go only up, nobody would know how much it would possibly go down, should it ever go down. If it would only go up, at some point it would possibly crash down to nothingness.