Take XMR for example, all it would take to have it crumble into a pile of dust would be news that Ricardo Spagni was on his knees in a South African prison servicing other inmates after being arrested on trumped up charges if anonymous coins were ever banned, and remaining XMR dev team would vaporise into thin air. Same for Z-cash with Zooko Wilcox, if he gets called into the FBI for a chat, Z-cash goes in the toilet.
In a few years crypto will likely be a battleground, with key people getting arrested for SEC violations and people will do jail time for some ICO abuses. When that happens only the Spartan coins will survive, and even a 500mil hack will look like a smack on the bum, not a night outdoors for a newborn. It's coming guys, WAR
Colorful language but point well made, public devs of anonymous crypto currencies is definitely a point of failure, that's why I prefer BBR::Zoidberg & KMD::jl777 in many ways to XMR and Zcash, as those guys are both anonymous and world class devs, and you still get the same basic tech as XMR & Zcash but with plenty of extra features.
edit, I see today TPTB are recycling 'child porn on the blockchain' , soon we'll hear news of terrorists using XMR and/or Zcash and that's when public devs will get squeezed for supporting terrorist organizations if they refuse to de-anonymize transactions, which would be complete BS but still enough to get someone behind bars to set an example