I think there is a natural reflex to want to reach for a tried and true explanation of how certain types of returns work in order to explain what we see happening in Bitcoin, but unfortunately CAGR actually distorts rather than clarifies what happens with BTC gains. CAGR relies fundamentally on being paid interest on then folding the interest back into the principle. This can only happen if you give your BTC to someone who will pay you interest for the privilege of using it for other things. If all you are talking about is buying and holding your own BTC then you are never paid interest. It’s just my personal opinion but I think it is important to be factually correct when trying to describe bitcoin and how it works. Otherwise you may lead someone down the wrong path and/or make ill informed decisions.