Yes, because getting rid of immortal madman, re-sealing the Breach for good this time and subsequently destroying the orb Solas cared so much about (which pushes him to killing... or "killing" his friend to steal her power) as well as establishing Inquisition as true powerhouse in Thedas - for better or worse - is not meaningful at all...
It's not. There are an infinite number of ways a villain can lose with the same result.
Maybe he's eating lunch and chokes on a bone and dies. The heroes win, happily ever after for everyone.
Maybe he slips on a rock, conks his head and bleeds out. The heroes win, happily ever after for everyone.
Maybe one of his mooks is practicing at the firing range and an accident happens, killing him. The heroes win, happily ever after for everyone.
Maybe he's in a car crash.
Maybe he simply runs out of money and has to shut down his big evil organization.
Maybe he gets sick.
Maybe his equipment doesn't work properly because some clerk filed the wrong form and received a shipment of wrong parts.
Maybe he gets hit by one of many thousands of artillery rounds, fired by a nameless undertrained private who will never have any idea what he did, and who barely has any clue who he's firing at and why.
Maybe his men are simply lazy and unmotivated and are willing to abandon their jobs for a small payoff.
Would you look at that.
All different ways a villain can be defeated. All completely realistic. All leading to the same result. The big evil villain is gone. The heroes win. Happily ever after for everyone.
All meaningless.