He has a colorable claim but no chance of winning. The founder of a cryptocurrency which now boasts of a >$1 billion market is legitimately a matter of the public interest, even if it's not the right guy.
This principle has been established many times by people who were mistaken for criminal defendants (not always defendants with the same name), including the Boston U student who killed himself shortly before the Boston Marathon bombing.
"Legitimate public interest" is a defense to a tort. It is used by the publication to defend itself from an invasion of privacy claim. It can't be used by a plaintiff (except as a defense to a counterclaim by the defendant).
