I've heard that before we well. Can I just ask what is meant by "Bitcoin is the highest quality asset"? Why is it the highest quality? And why do people use words like "pristine asset" to describe it?
Think about how you would transfer $1B of wealth into different assets. How long it would take you to move that amount of gold, or Real State, to another country, how easy or how difficult it would be, and what it would cost. Try sending $1B of wealth you have in gold, stocks, bonds or Real State to Madagascar today. And then think how easy it is to do it with Bitcoin and how cheap it is.
The return that Bitcoin has given since its creation is due to its intrinsic characteristics, decentralization, limit to supply, diminishing supply, the security of proof-of-work, etc. These characteristics that make it a safe asset to store wealth, easy to transport and easy to transfer are what make Bitcoin a pristine asset.