Other than jumping the gun with killing the High King, Ulfric is perfectly in the right with everything else in regards to the Thalmor, the Empire being a shell of its former self weighing everything else down to maintain its crumbling power, and making Skyrim independent
Nothing about him being a Tyrant either. He’s one of the few good Jarls in the game and the people of Windhelm willingly put him in the position with his father’s death. Before that, he was perfectly content as a soldier and in his own current position, he only wants to set the same example of a good leader as Ysgramor and his own father were.
Just look at the city Windhelm for proof. It’s almost as racially diverse as Solitude. At first, it looks oppressive to other races besides Nords when you walk right in and see 2 Nords harassing a Dunmer, how most of the Dunmer are living in the Grey Quarter, Argonians having to live outside on the docks, and that one Nord complaining about how Ulfric doesn’t give the same treatment for them as he does Nords.
Except that’s not the case at all. You got several Imperial civilians and even High Elves with a roof over their heads and running a successful business, including a High Elf alchemist, one whose a wealthy merchant, and two stable owners, and even one Dark Elf who doesn’t live in the Grey Quarter and is a farmer with an entire property to himself with a Nord servant no less.
Talk to the High Elf merchant or the Dark Elf farmer and both will point out that the Dunmer in the Grey Quarter are there because they refuse to adapt to their new lives and expecting a handout from a city in the middle of a war. Plus all the Dunmer and Argonian refugees coming in at once puts a strain on the city as it is and it can’t afford to accommodate any more than that unless they work for a living and purchase a home.
The Argonians likewise live outside because they too don’t have the money and A) working near water and profession involving it suits them and B) Ulfric doesn’t want any potential problems happening from an entire former slave race living with their former slavers, the Dunmer so he keeps them separated to maintain peace.
The war is also the same reason Ulfric doesn’t do much else for the city as he’s too busy with it. There is racism within some of the Stormcloaks and it’s supporters, but not its main leaders who are more than accepting of others. A lot of Ulfric’s perceived “racism” comes from people applying modern day values to a medieval Viking setting.
Always go Stormcloak in every campaign. The Empire is obsolete, untrustworthy, and only weighing everything else down with it. Nevermind how cozy and outright chummy some Imperial-aligned characters are with the Thalmor.
Ulfric is a dumbass. Good luck fighting the dominion alone bitch.
OT, we don't know whether GB believes the crap he spouted, or if he's simply spewing that shit to impress Aka or celestials. But, if he does believe in it, then he is worse. And even though Ulfric has the Thuum and war experience, GB would ragdoll him like a kid. He has no answer to logia or haki.
The Dominion in fear of a Stormcloak victory? Let alone with the Dragonborn on their side and backed by a now unified Skyrim they can no longer control through the Empire upon said Stormcloak Victory? Said unified country whose got a history of wiping out entire Elven civilizations in the past?
The Dominion is currently just as damaged from the Great War as the Empire with it ending in a stalemate and forcing a treaty lest both sides face complete annihilation. That’s why their banking so hard on the Civil War in Skyrim, keeping Skyrim in their control and the Empire wasting resources fighting the Nords while they regain back their strength for the inevitable second war. A victory for either side makes all their plans of divide and conquer fall apart
Hammerfell which seceded from the now useless Empire shows how much better independent nations not weighed down by the Empire work at opposing the Thalmor too with how the Redguards singlehandedly took back Hammerfell that the Empire basically gave to the Dominion and drove every Thalmor out of their land.