I thought the ending was hilarious myself. I loved it.
When you set out into the open of Sentinel Island and see the Battle Tower for the first time, the Battle tower is so huge. The ending was like a giant middle finger as tall as the tower. It was awesome. I'm not being sarcastic or passive-aggressive, I honestly thought it was funny how everything you did ended up being terrible or worthless.
These are major spoilers for the other games:
Divine Divinity:
After you become the Divine One, The Demon of Lies ills most of the Council of Seven, and sends thousands of demons to attack the kingdom you just spent 20 hours saving from villainy. Then at the end, you fail at the last minute to stop the ritual to bring back the Lord of Chaos. And you then fail to kill the Lord of Chaos merely because of the shell it's wearing.
Beyond Divinity:
The entire game from start to finish is a Xanatos gambit to get the player to willingly take Damian, disguised as a Death Knight back to Rivellon. After the reveal, there's a boss fight, and after you win, defeating Damian, you RUN AWAY through a rift. After you WIN the fight.
That's why the ending to Divinity 2 is such a "Larian ending". It's what they do.
