This might well be true, but it is very difficult to time the market.
How do you time the market? If Bitcoin is rising rapidly, people may be tempted to book profits even before it reaches 'mania' level.
On the other hand, you might sit on it for too long and the bubble might burst....
By the way it is described in the article a mania is nothing more than a super bubble, this means the bubbles we have experimented are going to come short to what we are going to see, the only way to not miss it is to be a long term holder and to have a target price, some people have speculated prices as high as a million for bitcoin, while that is unrealistic, there is no doubt that in a mania we will see ridiculous prices.