> "[VPNs are] used by around 20 per cent of European internet users they encrypt users’"
I think it is more like 2%. I don't know anyone but me who uses a VPN. I'd even say that if I picked 100 people I know, less then 20% know what a VPN is.
Furthermore, the article makes IPv6 sound bad. If I didn't know what IPv6 and VPNs are, I might think it IPv6 is bad, too. I'm also interested in knowing which VPN softwares they tested. While I'm certain that old VPN Softwares leak IPv6 IPs, I can't say that for all VPN softwares I use: OpenVPN (on Linux and Tunnelblick on Mac) and Mac's built-in VPN software (which supports L2TP over IPsec and PPTP). It is really a shame, though, that my VPN provider does not support IPv6, yet.
The only thing that really leaks my real IP is WebRTC. Thanks to WebRTC, everyone can see my real IP address and I can't disable in google chrome. If you want to check what information your VPN is leaking, checkout: https://ipleak.net/