He was a member, and while his member number (5030) isn't low enough to argue that he helped found the movement, he did explain that he has advocated on behalf of the FSF for quite some time. I too think his post was a step too far in the wrong direction, but saying that regular supporters of the FSF, long time contributors and everyday members don't "help in any meaningful way" to the FSF is a tad bit disingenuous.