"OpenBSD's OpenBGPD responsible for 30% of worldwide BGP communication" Ummm. Citation needed?
Yeah, that was my first thought, too. In all my years in networking, I've ran exactly one instance of OpenBGPD and that's used simply for real-time updates of (anti-spam) blacklists and whitelists [0,1]. [0]: http://bgp-spamd.net/ [1]: http://www.openbsd.org/papers/asiabsdcon2013/phessler-bgp-sp...
Also, most large service providers don't tend to talk about their internal implementations.
Many in the networking field have been indoctrinated in a Cisco-only philosophy, and then get hired into that monoculture over and over to the point they don't know about anything else, other than if it's something viewed as a Cisco competitor.