I think you're blowing the comment put of proportion by deliberately interpreting a very qualified statement in an extreme and maximalist way.

The poster dodnt say every wrong against everyone and everything ever has to be rectified. There are many concrete and affordable steps we can take to remediate much of the damage our societies have done and are doing to each other and the environment. I agree with the poster that we have an obligation to take as many of those steps as we feel we can afford.