The distinction you are not seeing is between actual harm and a pretext for lawyers to sue.
Actual harm to the environment and real business profits result from manufacturers producing and selling proprietary charing devices (I bought at least 3 and disposed of at least 2 Apple magsafe2 chargers, while having perfectly working generic chargers around my home).
An indie developer hosting a free website is neither causing permanent and irreversible damage to the environment nor is he making any money as a result of his websites not being accessibility compliant.