So many cryptocurrency projects solely on privacy claim to have advanced stealth technology with better scalability, yet their prices have not done any good. Monero price remains strong. It shows that asides the technology, there is much more that determine value
That or most people realize that those claims are usually BS. I mean how many coins claimed "Best privacy ever!!!" only to have it fail under the least bit of scrutiny? It's ludicrous how gullible some speculators are when it comes to claims, but with privacy, the very same people who are most well versed in how a privacy coin should be developed are the same ones who make up the Monero community, so people trust them to make an honest evaluation. And while Monero isn't perfect, it's still the best option.