LOL, is that your friend ? Maybe he regret his action when he saw bitcoin price hit $19k in the market last december.
For now, bitcoin is the most stable cryptocurrency in the market. While many altcoins fall into the bottom, bitcoin still stay on $6000++ or $7000
What i learn from your friend's story is, never take a haste decision if you are a holders. If you a traders, it will be different though.