matters not how much the coder "loved" the project, or did yoga, or that they've not made money for years, after all most book authors aren't exactly raking in the money either.
also like many thinks in life, some tools/projects/startups etc just stop being needed/used and new ones/competitors take over. there's nothing to say that since tool X is using A.I. therefore it has to be adopted by one and all; smiles all around.
google has 'right to be forgotten', also looking into 'machine unlearning' and it's common for platforms to honor user's request to remove their data / close their account.
[1] From OP: destroying what had been a clear labor of love and a useful project