It's very odd to hear the term "yield" be used to describe capital gains. Typically this term means return on investment from either interest or dividend income

It's very odd to hear the term "yield" be used to describe capital gains. Typically this term means return on investment from either interest or dividend income. Ie, the "safe" part of the return. For example it would be very strange to say an investment had negative yield (though it might have negative return), since yield is the money the investment "throws off" to the investor. If you are never planning to liquidate the investment, yield (and potential changes to it) is your primary concern. The only valid form of yield in crypto I think is earnings due to Proof of Stake deposits.