Yes I agree with not being able to delete other’s responses. And as I understand it, it is currently not possible for a user to delete a thread unless a moderator intervenes.
As far as moderation intervention policy goes for topic deletion, I think it should be on a case-by-case basis balancing the following:
- code of conduct
- user embarrassment / privacy exposure / simple typos
- number / effort in replies
- potential usefulness of discussion (and learning from mistakes)
And keeping in mind, the users may be fine with “anonymisation” of a post (i.e. remove user-related information from the post and change the poster to “DeletedUser”, for example).