This reminds me of the Top Gear episode from many years ago where they tested I think a Ford Focus. They got one in an absolutely glaring, toxic frog green color at the point of being fluorescent. So at some point, Clarkson asks the rhetorical question, "is it green?" Promptly answering: "very!"
So, as
@AgX also mentioned: how eco do you want it to be?
Btw, if you're lucky, the hydroquinone is replaced by ascorbate, which indeed is virtually non-toxic. There will still be phenidone in the developer, and that certainly is toxic. But its present in a fairly low concentration.
Fixer generally isn't toxic to begin with, but as soon as it's used, regardless if it's "eco" (whatever the heck that may mean for fixer), it will have silver complexes in it that surely aren't very good for the marine environment.
As to stop bath, it eludes me how this could sensibly be called "eco" as a differentiation from any old stop bath as stop bath is generally acetic or citric acid, both of which are common chemicals in nature. Pretty much any random stop bath could therefore be labeled "eco" without this meaning anything in terms of improved environmental performance.
You'll get the same degree of "eco" by using XTOL or any of its clones and any random stop bath and fixer. The only "eco-ness" you might reasonably add on top of this is if the product is shipped in bottles and cartons made from recycled materials and if these materials in turn allow for waste separation and recycling (which in practice is really downcycling, as real recycling is very, very seldomly possible in reality, but that's a whole different story).
If I were to market a product today, I'd make sure to stick a big label with terms like "green", "eco" and "vegan" on there just for good measure. After all, don't we all want vegan fixer to fix our pig gelatin emulsions with?
/rant.