Yeah, I agree with this. However, I wanted to add in that in many cases, even without the disclaimer, the volunteer company could legally be able to disclose those pictures.

Because in order for something to be commercial, it needs to be promoting a product or an organization. So a big company just posting pictures, saying, look, this is our volunteer work, doesn’t necessarily require any type of disclosure notice.

As long as the volunteer work was being done in a public location(or even a private location with signs), then it’s free game. It’s more of a cover the grey areas in the law policy and remove the extra work if the intent is to promote a product( like you mentioned.)