Current day volume is very low but exchange has just started.
Exchange was created by XLR developers. If they wanted to steal money they would run with their premine a year ago when XLR was 10 times higher

Sure.
If Solaris team wanted to make exit scam, they would do it when Solaris stood above $50, not now.
One more good thing, Solaris team hired Dabs (staff) to make Escrow service for the last year's bounties.
Scam teams will not do this.