Lol, no source code on github, but windows and mac binaries from somewhere? Are u fucking kidding?
That is weird indeed.
Also, all premined coins are staking.
"staking moneysupply" : 12500000.00000000,
"staking totalmint" : 12500000.00000000,
This doesn't mean those coins are staking. What it means is that the coin being reported (BRX) is a staking coin. That staking coin has a money supply of 12,500,000. This means that there are 12,500,000 of these staking coins in circulation. This total amount in circulation is the same as the total that have ever been minted, meaning none of these coins are awaiting being scavenged as fees by PoW miners.