Don't say they will disappear or don't care about Bitcoin. Not all people in crypto space are daily traders, some of them probably long term traders. So, they are only active in the crypto market when the Bitcoin price drops hardly, or once Bitcoin price increases very significantly. We cannot blame them, buddy! Everyone has their own target, and also apply their own style in managing their crypto assets. So, let them do what they want to their Bitcoins! Don't think about it too much.