Indeed, but the crypto keyword made us click on the article.
Otherwise it would have been quite a common article with some commonsense advices on basic web security...
The fact that makers of those websites are supposedly 'crypto' experts (and should as such probably not be completely ignorant of information security) makes the presence of such vulnerabilities in their websites more appalling than the same vulnerabilities in your average Joe's webapp.
I genuinely tried to complied the issues and yes, most of them are crypto websites.