Ha! Who ever said that has no idea what Bitcoin is capable of.
Well, he might have sold early considering how everyone in crypto space and even in crypto twitter has been very bullish now a days. There's a very huge chance Btc could reach and break the last ATH on the 4th quarter this year or in 2021. Post halving hype, the fall of USD, bullish predictions, and the growing number of Bitcoin adoption are just some of the main factor to consider why Btc will hit new heights in 2021.
I know it isn't easy to hold such patience, specially when you're holding that huge amount of Btc for almost 2 years, but he could've doubled the $12,000 worth of Btc in the next few months.