Re your second case: When economic incentives line up with environmental goals, progress is made. OP should have been transparent, but if someone makes a profit while improving other people's eco-footprints, it's a win-win.
Replacing disposable plates with slightly more "eco friendly" disposable plates isn't really improving anyone's eco-footprint. It's reinforcing the idea that disposable anything is eco-friendly.
Good is not the enemy of perfect. There are cases where disposable plates are more or less required. Food trucks/carts for example. One I frequent recently moved to using compostable plates.
>There are cases where disposable plates are more or less required.
I completely disagree, although there are cases where non-disposable plates are too expensive to have due to various reasons, but if that's the case you probably shouldn't be doing what you're doing.