Bitcoin is no doubt David in the fight against safe haven goliath gold . Bitcoins market cap is growing at an incredible rate, and I imagine as seen in this chart there have been a lot of selling into BTC . Let's now view it below with a gold cryptocurrency.
I feel the slide on Gold since it's peak has more to do with rising bond yields and that gold is primarily used as a "risk off" asset where the markets are clearly going risk on.
On a long term demographically view I agree gold will lose some steam to bitcoin since generationally younger people will have more acceptance of a digital asset then earlier generations like Boomers.