Just write or choose a good ethical framework that is actually relevant for the management of online communities. There’s better, more modern shit out there that also includes the principle of do no harm.
You know what would be helpful here? Actually naming and/or linking to some of these better frameworks you think they should consider using.
For the sake of teaching good habits, rather than telling you what I do, I would instead say read the manual for the car you’re driving. Not all cars operate the same way.