The long gone history of a country is not a something that should be allowed to determine its modern narratives. You shouldn't forget your history, but there are limits you shouldn't cross. When I hear arguments going back for centuries, it is a red flag for me. It is most likely a propaganda.
Psychologists talk about two common failing of their clients. People often fixate over the past or they fixate over the future, while forgetting about the present. The healthy approach is to keep a good balance between the past, the future, and the present, with a strong accent on the present. The history determinism reminds me a lot of the over-fixation on the past, and propaganda actively tries to unsettle balances in people's minds and fixate them on anything but the present.