I disagree that all threads should be deleted, only those that are at issue and have been identified. Unless that issue was demonstrated and justified in all, deleting all, IMO, would be a form of censorship. I don't think that censoring participants is
desirable unless there is a blatant example of malpractice or the participant is threatening others. Yes, it is good that we respect others and treat them as we would like to be treated, but we are often discussing issues that are highly volatile because we have so much vested in our own opinions.
This is just my personal opinion.