I see some passive-aggressive chat in there. Its mild, but its there.
Seeing he got permaed, he probably was on his last straw after his 14-day ban, and for him to get into the 14-day ban, he must have did something to get there.
Understand that the punishment system works in tiers:
- 10 game chat restrict
- 25 game chat restrict
- 14-day ban
- Permaban
If he got punished through the system within a short timespan, then 1 negativity will get him permabanned. So go back and ask your friend, when was his chat restricts and 14-day ban issued, and I think you'll find your answer there.