You're right in that they are trying and have a good track record in terms of environmentalism. However, when producing something for comsumption, there is always impact.

As someone from the Coca Cola company said once:

"“When we look at a different material, you look at all of the levers: the carbon footprint, consumer preference, energy, water...There’s a mix, there are some things that are not that desirable, but if you have five good things and one that isn’t, we’ll all have to make decisions.”

“It’ll never be that clean.”