ZKPs are actually one of the "spin-offs" I've been really excited about. The hype in CC/BC has caused more funding and research into that area. It really has been a recent golden era for cryptography. We have services like Signal and Matrix becoming popular (making cryptographic communication simple) and privacy is being taken seriously. Makes sense that people want to do the same with money/transactions.
But also, to be clear, it is hard to separate the signal from the noise. Especially with hyped subjects like CC/BC.
A related thing that's bonkers to me is how much progress there has been in ZK cryptography.
But people just dismiss the field, saying "ZK existed since the 80s it's a fad", and post yet another Bruce Schneier article.