I imagine it's referring to anonymous VPN traffic through providers like Mullvad. Your internet traffic through your corp VPN is likely already at Orwellian-levels of surveillance, and that traffic can at least be tracked back to a asingle identifiable business.
Would a child have access to a paid VPN like Mullvad anyway, I wonder.
If they ban OpenVPN and WireGuard through what I can only think is something akin to the great firewall of China, then what is the next step, making ssh -D unlawful?
Maybe encryption too? Maybe they need to ban booting Linux and filter access to open source software as well? Running unsigned code? Might as well just shut down the internet.