I think it's either fear or denial. BTC has such a huge amount of adoption, not just in people owning it, but in companies building technology around it.

• Hardware Wallets
• BTC ATM
• BTC Visa cards
• Japan now accepting BTC as official form of payment

The list goes on. Fear that gold is losing its value in favor of something they don't understand is what's making them deny what is happening before their very eyes.