Threads are not deleted based on likes and dislikes of Moderators. They are deleted if there is gross violation of forum rules and regulations. Even here in past the practice is to give warning before the deletion is done.
I have no idea of about which particular thread this discussion is....but if the members feel that the deletion is incorrect, they can write to Traderji/Admin and ask the reasons for such deletion.
Unless there is a gross violation which does not necessitate the warning but needs immediate action or unless the thread is irrelevant to the forum theme, a thread will never be deleted.
Smart_trade