This is the mistake of many a newbie. Those who do this think that when the market is flat that those crashed coins/tokens won't rise again. It's fear that makes investors do this. Their inexperience makes them wait for a rush to buy in order not to miss out. But the true position of things should be to become weary when everyone is rushing in to buy. The rumour of war should get people prepared and not the war itself. But crypto veterans know this game that Bitcoin can never disappear and so they wait to stock their hodlings at each major corrections; not after that.