^
I'm sorry but that does no such thing. For one, the Ronon character fits the Other/alien category of character like Teal'c and Teyla that the Stargate writers found more easy to write for than regular, human characters of color and to be fair some other white characters too. That being said, the Stargate writers were able to come up with interesting white leads and also ancillary characters, moreso than characters of color. Also, we don't know how much of Ronon's 'personality' came from the actor or the writers. Similar to how I described Greer earlier. Jamil W. Smith did more with his nonverbals sometimes to convey his character in a way the writing lacked. I don't know how much Jason Momoa's nonverbals or ad libs might've fleshed out his character when the writing didn't.
Now just reducing this to the lack of development among black characters, Jason Momoa isn't black. He's half-Hawaiian/half-white. So Ronon's development would not apply there. Teal'c and Teyla would, however, I think it must be recognized that both are alien characters portrayed by black actors, allowing the writers to bypass human black experiences/cultures, for made up ones.
I want to thank the poster for mentioning that Judge might have written some Teal'c material himself. I can see that happening. That makes more sense to me about his evolving development, vis-a-vis leaving it solely in the writing room's hands. To their credit, if that's the case, they did let his ideas take root.
I think an argument can be made that with Stargate character development wasn't always great period. However, when you look at the characters who did get that focus, who did get that push (whether it succeeded or failed), the vast majority were white. The only black characters who got that push were alien (their humanity tenuous),which reinforces the idea of blacks/non-whites as exotic, alien. Why I think that's so is because the writers, producers, and people behind the scenes were largely white. This was another example of ethnocentrism IMO.