saying Bitcoin is stable could be kinda misleading and may not be the right choice of word to best describe Bitcoin prices or even a consolidation period because bitcoin is originally known for its volatility and its rapid price fluctuations.
When talk about Consolidation in the bitcoin market, it simply implies a period of time when the bitcoin price range are relatively narrow, but this is far from stability, it's more like a recuperation period or a pause in Bitcoin price to prepare the market for the next significant movement in bitcoin price.
It wouldn't be a problem if we didn't consider Bitcoin a stable asset because its volatility and rapid price fluctuations in Bitcoin are what make everyone start to place more hope in Bitcoin. And it has also been proven that several cycles or periods of price recovery occur before more significant movements occur in the market for Bitcoin. Apart from that, traders also prefer Bitcoin because they can take quick profits from daily price movements in the market rather than stable prices that they cannot take advantage of on a daily basis.