[SmirkingRevenge]

Without context, you can't even know how to help their conditions, if you wanted to.

If Amazon is a singularly bad warehouse employer, punishing them in some way (boycotts, etc) might be appropriate.

If Amazon is a singularly good warehouse employer, rewarding them with more business and good PR might be appropriate. It could incentivize the competition to follow suit and Amazon to raise its standards even further to stay ahead.

If Amazon is a typical warehouse employer, then I would find it counter productive to single out Amazon for punishment or reward, rather than the actual good/bad outliers among warehouse operators.

Context matters.