Is it?

The Kasim Reed years produced a few federal prosecutions [e.g. 0], but generally it's been pretty quiet?

And it's not like the US Attorney isn't looking. So either Atlanta politicians are better at hiding their crimes, or they aren't committing them at the average rate [1].

Subjectively, I'd say that Atlanta has a fair amount of low-level corruption (see the Park amounts), but generally avoids the major-level corruption that other cities get caught in.

[0] https://www.ajc.com/news/local/torpy-large-when-the-cost-you...

[1] https://pols.uic.edu/wp-content/uploads/sites/273/2023/11/Co...

Every single American city has this to one degree or another, even if it's just "hey, my brother owns a landscaping business and can mow city hall...". But a Byzantine government structure and a "fuck you, got mine" attitude baked into the national ethos will do that.