The value of $ZEC zec lies in its ability to send transactions anonymously on-chain. This means that only those you want to see the transaction can view it. However, there are two interpretations of this: one is a supplement to the insufficient decentralization privacy; the other is a divergence from BTC's public nature and transparency. Pumping the former concept can cause a price spike, while hyping the latter can lead to a crash 😅😅
(Personal opinion, not investment advice)