Those who lost bitcoins on this site just because of their own faults should not blame site for this.
It looks like the one who have lost bitcoin due to confusion he had with the bonus terms of duckdice have created scam accusation against duckdice, when that will settle down duckdice might gain their trust back. But for me duckdice is trusted because I don't claim any types of bonus in dice sites so whatever terms they have about bonus will not effect me.
(However, I haven't gone deeply through that scam accusation against duckdice)
duckdice.io had been good since they lauch,in fact they are one of the fastest growing gambling sites (credit to all its admins for their hardwork).what happen with that player is a an isolated case which is basically not a site mistake.