You are aware VPNs are not just Tor right? Commercial VPNs have been in the spotlight for at least a decade as a way to spoof streaming and gaming services' regional lockouts. I have no trouble believing 25% of teenagers at least know about VPNs.
Which implies that 25% know about Tor and traditional VPNs. So even when a teen isn't necessarily going to use Tor they know that other VPNs exist to get around blocks.
