It actually depends on the situation. If a person bought Bitcoin with his/her whole savings during the lowest DIPs of the bear cycle, then it would be the correct decision. You may call it "luck", but the right decision.
I would consider it a risky decision rather than a right decision. One of our main problems is that when we take a risk and when it succeeds, we consider it a right decision. But what if it fails? If it fails, let's not forget to make all kinds of negative comments about his decision.
Suppose someone bought Bitcoin with all his savings at the lowest DIP of the bear cycle, but could not do it long term due to financial crisis. Because he bought Bitcoin with all his savings. Then would you call his decision a right decision? Or if he lost his access to it in an accident or somehow lost his Bitcoins, then what would you call his decision? Good or bad?
Actually, I don't see anything wrong with buying at this time, but buying with all his savings at any time of the market is a wrong decision. Because it is a very risky decision. If you succeed, you are profitable, but if you fail, your life may be ruined. Because you will have nothing left.