Once we've proven that Bitcoin keeps rising every year, holding onto it seems risk free... this confidence is expected to persist as the asset continues to grow.
However, BTC remains volatile, and that's an inherent trait. I can say that the risk with Bitcoin is relative, depending on how people treat it. Everyone has a different perspective on this, and I can conclude that there are two types of investors who will view this either as a risky or non-risky asset: long term investors and short term investors.
Long term investors are always optimistic about the future based on their fundamental analysis... and daily price changes don't bother them because they not monitor short term price movements.
On the other hand, short term investors clearly see this as high risk, as daily candlestick fluctuations go up and down due to its volatility... those who don't have good trading skills may face losses because they consider too many calculations. This is the real risk because no one knows whether Bitcoin will go up or down tomorrow. It all happens spontaneously due to market conditions and circulating news.