Bernard Madoff carefully maintained his scam biz about 20 years. Central Bank scam is even running more than hundred years and it's still working .
So ...
Sorry ! Let us face the truth , BTSX did change its total supply  whatever the reason . They break the rules .
You can say bitshares is like stock share which controlled by a company , yea , it's ok !
But be remember , it's not a currency , it's not decentralized , it's totally central controlled . You guys playing this at your own risk .