It is a pity! Your friend lost patience. There is a certain percentage of bitcoiners who also lose it with bitcoin and decide to experiment with altcoins. Investors in bitcoin think of a long-term investment, it is not the only coins in their portfolios. An example of them is Grayscale services, let's take a look at this tweet.
What happened to your friend is a bad experience that reminds us that we must set a goal and not hesitate to avoid having to regret bad decisions.
This is just to know that not all are having the courage to hold longer. Many were often discourage especially when they saw a market declines, the chart is red, and they will think negatively. That person as OP mentioned is an example of those people that are incapable to stay calm but they often to get worried and then thinking about selling.
That is somewhat pitty but that is his decision, he could realize it soon and that might be a reason for him to change. I hope he will.
