There are plenty of analysts out there and you will believe ones you trust at the end of the day.
We face chaotic times when no one actually know what is going on and where we're heading to, just place your own bet
Perhaps it was base on technical analysis. But we have seen the the price really drop to $30k and for obviously reasons, traders are selling and taking profits. Healthy? could be because if gives us the opportunity to purchase bitcoin at a cheap price. Necessary? well it depends, if the price is really on the overbought region then an imminent market correction is needed to bring fresh investors in the market.