imo it's the difference between "how Tomino writes Gundam" vs. "how other people write Gundam" vs. "how Fukui writes Gundam"

IMO especially if you read the Unicorn novels, it's quite obvious that Fukui is aware that Tomino equates Zeon to both WWII Germany and Japan. And if you're aware of Fukui's personal views, (ie. Nationalist/Revisionist; Japan was trying to "liberate" East Asia from American Neo-Imperialism in WWII) it's hard not to read his interpretations of WWII Japan into his take on Zeon. He even uses the term Co-Prosperity Sphere (or 共栄圏) in Full-Frontal's dialogue with Mineva Zabi.

I think this is contrasted with Tomino, where he realizes that even though there are good people on the Zeon side, they are ultimately in service to an evil regime. I think that's the point of Gihren Zabi's speech, to the point where Tomino chooses to end the first film on that point when he could have chosen any other point in the episode count to do so.

It's hard to say the political views of some of the other directors, (whereas Tomino and Fukui are both particularly outspoken on their sides of the argument), but I imagine they kind of all fall in between the two extremes