While the code is meant to limit the total asset at risk, its important to notice that because of the following check:
MerkleRedeemerDripper.sol#L23-L24
Any balance below amountToDrip, after enough time has passed, will alow to drip more, meaning the total amount at risk is not amountToDrip but up to 2 * amountToDrip - 1.
I recommend commenting this.
