When they talk about detection, they are most likely referring to protocol level detection by ISPs forced to block VPN traffic, hostile local networks, corporat

When they talk about detection, they are most likely referring to protocol level detection by ISPs forced to block VPN traffic, hostile local networks, corporate firewalls and such. The actual service you are connecting to (example: website, game server etc.) most likely uses a IP-based detection service such as https://focsec.com/ https://focsec.com/ or similar. In such cases, the protocol will not make a difference.