I think it's a valid prediction. Stock investment is not popular in Indonesia, combined with a lot of paperwork needed to start investing, only scare people from it. Compare it to crypto: To register for an exchange, you only need to fill KYC requirement that is: scan of ID, self-photograph, and filling some personal info. Wait for a day. That's it. No taxes too.
impose tax for bitcoin investors.
You're right, this is the government's to lose. They didn't have any rule about Bitcoin so far so why would people pay taxes on it? Furthermore, there is no clear assessment what kind of asset Bitcoin is nor there is a guide for how to fill taxes for Bitcoin.