According to him, the attackers are an Indonesian in the form of a policeman, a man in a Balaklava, as well as two two men of Caucasian appearance.
It looks like a fake robbery claiming if they were a policeman.
Since the victim is a crypto blogger which is publicity if he is interested with crypto, it's not surprising if he get robbed. He make money by selling his privacy, so he must accept the risk what have he done.
if you have already told other people the number of your bitcoins, you should make other reasons when people ask you about it again, crime can come from anyone and anywhere, so being suspicious is quite important.
It's not only limited by told other people of Bitcoin you hold, but other thing like: teaching someone about Bitcoin, wear a shirt or anything related with Bitcoin, submitting your KYC to online site, and installing many applications which can spy anything in your device.