No, they were definitely right.
The bit I read about the Thalmor invading Skyrim was flat out wrong. I talked about this with you, outlined why its not likely, and you didnt answer back.
1. The surrounding territories:
Leaves the Thalmor's troops extremely exposed from the rear by the Empire and Hammerfell.
2. The terrain.
Mountainous borders not only make it hard to cross, but hard to receive supply lines and reinforcements. Thalmor dont have a lot of soldiers anyway, so reinforcements are very vital.
3. Climate.
History will show when a people unused to the cold weather fight in cold weather, it is a big disadvantage. Combine that with the fact the Nords have an actual magical resistance to cold, and perform very well in it, well, the homefield advantage is theirs.
4. The Sea on the North is treacherous:
The Nords narrow boats are pretty much like the vikings, where they have the ability to better perform in shallow waters and rocky water areas. The thalmor dont have these kinds of ships. Even though they have a superior navy, that will have an effect when they come in to land on Skyrim. Even then, I really doubt they'll be able to set up shop so to speak while being attacked constantly by the nords, which is important when trying to recieve troops and supplies. They cant have ports in a hostile area. They need somewhere nearby, which is why I think they'd go for the Empire or Hammerfell again, first. Also,
5. Distance:
Skyrim is pretty far from Summerset Isle. Without somewhere nearby, not only will they not recieve troops and supplies fast enough, but again, they dont have any nearby safe zone place to stay while attacking Skyrim. They can stay on the boats, but then they risk losing the land they fought for on the beaches. That isn't really safe either since they'd be constantly hounded on water by the Nords. Them invading from the Northern seas just isn't a realistic option. Neither is it from the southern area while the Empire and Hammerfell are still in the way. Then there's the fact that Elves dont reproduce as fast as humans, and Thalmor are picky with their rugrats. In the long run, the soldiers they lose costs them a lot.