I did not know people could still delete posts after the edit-time expired. This is very dangerous - as mentioned in other Topics, a small number of once regular users can harm a site significantly by deleting all of their posts as so many Topics will be rendered useless/difficult to follow.
Please can we make this an admin configurable option or just make it respect the edit-time setting?
Forums are different to social networks - whenever anyone contributes to a forum they are willingly contributing to a resource created by and for the good of the community/public. There have even been legal cases that I have heard of where users who have wanted all their posts deleted (and the admin refused) resulting in a court ruling that by signing up and posting content they were willingly submitting content to the resources of the site. It’s why we (and many forum-like commenting systems, such as big sites such as the BBC) specifically ask for perpetual publishing rights in terms.