Just a heads up: "crypto Jew" is also an antisemitic buzz word, which is why I suspect the linked article says "hidden" instead.
In the same way security researchers are not responsible for security vulnerabilities, but may take heat for pointing them out.
That being said, just because they try to appropriate the terms doesn't mean it has to work. They can be reappropriated back to their original meaning.
Moreover, when unopposed, nazi and antisemitism do not die out. Instead, they get stronger and larger in numbers. It is an actual ideology and those who believe it are actively trying to spread it.
It is not "reanalyzed" as such. It is that antisemitic use it as such.