Why only all posters? Everybody who has read that thread, of course.

That is a useful suggestion - I am glad we two are in agreement. For surely and at least, those who have been invited to contribute to a thread should really be asked before their (non-offending) contribution is deleted along with the entire thread or the entire thread closed?

Or if our volunteers do not want to be bothered with first obtaining all this advanced permission - perhaps our volunteers could explain to us - (if such imposed action is ever judged by them to be required) - why it is not possible to confine this to the offending post(s) only and and editorial comment left in its place to explain why the imposed action was taken?