More and more companies are not speaking up about their sustainability initiatives for fear of exposing failures, or being afraid of 'not doing enough'

This is discussed in this article from Sustainable Brands.

In the wake of governments cracking down on greenwashing, and facing the reputational risk involved, organisations are becoming more cautious. To avoid risks of greenwashing under increased scrutiny, it is necessary to be able to back up your claims with evidence — and as this can be difficult without the right data and tracking in place, it becomes easier and safer to communicate less.