Nat Friedman is a legend in the open source community. He founded Ximian in '99 with Miguel de Icaza, who both meant a lot for the Gnome community (e.g. via products such as Ximian Evolution) and Mono (FOSS .NET for *NIX). They got bought by Novell where he also got a top position. Nat has been busy with FOSS for a long time, and he _believes_ in it.
Some verification on the above plus other details can be found here on Wikipedia [1]
As a final note, "I’m not asking for your trust, but I’m committed to earning it." is very humble, professional, and clever.