Yes, no need for diversification here. Bitcoin should not be seen as an investment, but as a savings account which appreciates in value. Bitcoin isnt volatile, its the fiat world around us. Bitcoin may react to some decisions of the fed etc. but it is not dependent on it. If the price falls, it will come back, because people will eventually realise that it has no real impact on bitcoin. Traditional investment were born because of the fiat world and are therefore very dependent on decisions from the elite.

Bitcoin is not the same category as traditional investments. It is a system on its own and only reacts to certain events because people are used to speculate because their money loses its value pretty fast.