+1
Would expect this to be a very business-heavy route. Motivation from UA would likely be a belief they can monetize that forward cabin, not as a "tourism" route as someone noted up thread.
I agree - Dublin is an outright tech hub now for several years. For better or worse, the place has been transformed including much heavier traffic - the vibe of the city has really changed the past 20 years, but I still really enjoy it.