I was myself searching for answers.
After speaking and seeing tons of dbd players using it and like 80% (more than a half) getting banned in no time, i guess all manual bans. At first i didn't believe some players got banned for rank changing which was known to be safe, however it was proved that they also ban for that and obviously, they also can see that.
What about the rest (20%)? i have no idea how some are still not banned, their system is tricky (however i'm thinking they didnt got reported)
Conclusion: You get banned for that, not by EAC but game devs aka ACM (associated community managers that check your save and stuff once MANUAL reported / mass reported in-game)
-----
Update reply:
To be as honest as possible: I don't even know anymore if you even need to get reported, as devs check this forum all the time. Maybe you don't even need to be reported but i have no idea at this point.