That just means he was using a poorly made hacking tool off the shelf which had a characteristic known to fair fight and something triggered it. It almost certainly wasnt the reports that made any difference thaty quickly. 
I have seen people that I know for a fact to be hacking (one was my friends son) being outrageous in the game as he just didnt care by that point because he was just playing to attack the game itself. By that time, he was making a point that origin is not secure. I dont know if anything ever happened but it went on for a couple of months at least that I know of.  He probably just stopped playing but people were all saying he was reported in chat all the time.  He did something which you couldnt actually enter his name into the friends thing to report so unless you had origin in game open and could right click it was almost impossible so perhaps they were not able to in many cases.
I had a worse situation in the past myself.  Somehow people were using origin to deliver malware directly.   It is well documented that exploits in origin have been found, from time to time, that allow an attack to could actually gain control of someones computer to run code and it happened to me.  They are well documented on security websites which is why some companies ban or block Origin from running over a computer or even just the same DSL as a computer used for homeworking. 
If you look in your EA profile, you will find that, to this day, it records all the IP addresses used to access the account there. So if they get access to the account they can see that and attack directly. I dont know if it is still the case, but this used to be visible to tier 1 and all EA support employees. So they know you have a platform they can exploit and your IP address and probably a whole lot more besides. 
I actually just logged into answers to see if anyone was reporting new exploits in this area as I found information on a security website so I wondered if anyone was reporting it here.