I have not been banned and I have been using OBS the entire that I have been playing, around 10 hours so far.
I have not however tried using MSI Afterburner or the likes simply because I just have NVinspector and Real Temp open on my 2nd monitor with OBS.
I would not be surprised if some of these bans are because of what I have seen most of the day today, which is people intentionally making there internet connection so bad that they lag all over the map, and they are practically impossible to kill, I said on another forum it's one of the things that ruined the PVP on consoles because all the "Try Hard" PVP players were doing it do get easy wins, you would see it in most matches or streams and Bungie does ban for that.