That's just the EDI non stop pax. Total route capacity for the month was 8348 (large number of B789 subs, if it was all B788 as is scheduled 7242), so it's not great based on pax demand alone. However, the large number of upgrades when there seems to be no need for it based on pax demand could suggest high cargo loads.
EDI has been carrying comfortably more than DUB on the non stop routings up to this stage so I don't expect the DUB non stop figure to be anything special either. For example, the EDI Oct figure is comparable to what DUB carried in August.
It's not entirely surprising, as the route is hardly the most attractive or convenient option in it's current state.