Having 10 highly paid long-tenured engineering employees who can look at small parts of a users account data is clearly better than having 10,000 call center workers be able to access user private data.
The end result is high profile incidents get handled in a way that it would be too risky to do for everyone.
Even with the small pool of engineers, there are incidents[1] where user data is used inappropriately. Would you make this pool larger?
[1]: https://www.businessinsider.com/google-engineer-stalked-teen...
I don't see why all the reasons above mean basic transparency can't happen.
> Sadly this would make the system utterly trivial to gamify
There is a reasonable middle ground that would make gamification harder and at the same time satisfy less abusive users. You can disclose the sanction immediately, would need to add a short but variable delay before disclosing the underlying reason, to prevent abusing from abusing the system repeatedly.