Actually, mainstream coins: BTC, BCH, ETH, LTC, LINK, XRP can be held for the long term when there is market activity, after all, mainstream coins are not like altcoins that could go to zero or even delist. Mainstream coins are generally held long-term by large institutions, and there are lock-up dates. They won’t easily crash; it’s simply impossible for a few small investors to influence the price of Bitcoin. The mainstream coins purchased by Grayscale institutions usually have a lock-up period of 6 months, so there's no need to worry.