I believe the arguments that climate change activists would make is that because the company is large and have the most control over themselves, they should take the lead and be environmentally conscious, especially since they have promised it.

Comparing corporations to collective governance actions, it would be akin to saying that since international laws are at a standstill, it is those who pollute the most and make the greatest impact (eg China) who should start by reducing their carbon footprints since they have the ability to control themselves and would make a significant positive impact by doing so.

(Separately, even though I made the chart, I'm not sure if i agree with the position taken by these NGOs here and posted it with the view of hearing from Redditors and I definitely see where you're coming from.)