VAC bans last a year, and are only permanent if you have multiple bans on record. Should probably look at it a bit more before you render an assurance that he's banned permanently.
Uhhh lol
Valve started coding on a 'long-term solution' for cheating in 2001.[7] VAC was first released with Counter-Strike 1.4 in 2002, during its initial release, it only banned players for 24 hours.[8] The duration of the ban was increased over time, players were banned for 1 year and 5 years, until 2005 when any new bans became permanent.[9] The initial version, VAC1, saw success for a period, but in March or April 2004 updates ran dry as the Valve engineers maintaining it moved on to the production of its successor, VAC2.
(Wikipedia)
Your info is eight years out of date. Thank you for demonstrating the Dunning-Kruger Effect.