Although many Linux distros offer a built-in VPN feature accessible through the Network Manager, it’s not the same as having a dedicated VPN.  It means you could set up a VPN connection without using a definite app. Nonetheless, it’ll still require a VPN service provider, and the user must manually configure it. Plus, the experience won’t come close to a commercial VPN’s simplicity and flexibility. Most users don’t have access to a spare VPN server, let alone one that would let them route their traffic through another country. So, the potential capability is present, but it can’t replace a dedicated Linux VPN client.