Given that he still has eShop access, they actually just might. They had the chance to ban his account but didn't (yet). An unbanned account with a banned Switch is about as good as an unbanned account by itself. They can take the chance he buys another Switch to do the same thing over again and decide to ban both.
Anyways, I will now be asking all contributors to access the eShop from a non-Switch device to check if they have access. I'm actually unsure if anyone had any account bans at all considering everyone seems to have the same error code meaning they're all console bans.