More like: if unsold X is given away to people who need it, don't buy X with the goal of reducing waste. And if your other possible motivation is to help the pr

More like: if unsold X is given away to people who need it, don't buy X with the goal of reducing waste. And if your other possible motivation is to help the producers of X, bear in mind that there is another group with conflicting interests. (But it doesn't sound silly if you summarise it accurately, does it?)