> OpenVPN does not have out-of-the-box client support on any major desktop or mobile operating system. This introduces user experience issues and requires the user to update and maintain the software themselves. OpenVPN depends on the security of TLS, both the protocol and its implementations, and we simply trust the server less due to past security incidents.

Writeup with links available in our FAQ: https://github.com/trailofbits/algo/blob/master/docs/faq.md#...