Yall don't know what gambling is, apparently.
Gambling is paying for a chance to win something. Casinos are gambling. Slot machines are gambling.
Kuku, you're GUARANTEED to win something whenever you open a chest. Could be a Burden. Could be a token. Could be ANOTHER GODDAMMNED BONKERS. Most likely, it's a few coin.
That's not gambling. That's paying for a grab-bag.