Selling the charger separately increases packaging waste and Apple still has to ship them separately. Probably Apple will save more money by selling only the chargers needed, but the claim that this is primarily for environmental friendliness is disingenuous even if tangentially true.
I never said enviromental claims was primarily the reason for the change, i said it was an added bonus. They will ship way more iPhones out of China than individual chargers so that smaller packaging will infact save them alot of money. Im am glad for this change I don't need the earbuds i have owned AirPods since they came out, so each year they just get added to a drawer unused to gather dust. I dont need anymore chargers either, my house of full of them. The cable will be useful as a backup for when the ones i use now wear out.