Some guys ended up being more correct than others by investing into bitcoin, but even the ones who ended up being more correct (and even as more importantly reflected in their actions) still did necessarily know or understand the then future beyond merely assessing of some probabilities regarding various scenarios and some scenarios more correct than others..and even with the passage of time, their believes could be confirmed or denied by subsequent folding out of events..
The correct way to proceed with Bitcoin is to just keep accumulating and don't look for long time what you have accumulated. We have so much data available that tells us how beneficial it is to hodl bitcoin for long time. Even if still someone is not convinced, it's his own choice.