Why should anyone care that this kind of behavior can get people thrown in prison, robbed, or killed in their home nations for no other reason than some people here have nothing better to do than play private investigator?
BTC_Bear/JusticeForYou has already disclosed having large amounts of BTC years ago. Asking for a signed message is typical when an account is suspected to have changed hands and doesn't put them into any more danger and it doesn't disclose IRL identity.
If my account starts posting with an Indonesian accent I sure as hell hope that "investigators" paint it red up the wazoo as soon as possible. While you would wait for it to scam someone.