Ok here's my "research."
2012 DCI finals attendance: 17,820
DCP members with 1+ post: 12,020 (5800 fewer than attended finals in a single year)
DCP members with 10+ post: 6,580 (11,240 fewer than attended finals in a single year)
DCP members with 50+ post: 3,320 (14,500 fewer than attended finals in a single year)
DCP members with 100+ post: 2,300 (15,520 fewer than attended finals in a single year)
DCP members with 200+ post: 1480 (16,340 fewer than attended finals in a single year)
DCP members with 500+ post: 720 (17,100 fewer than attended finals in a single year)
And that doesn't even factor in which of these members marched BITD, recently, staff, new fans, old fans, etc
Internet forums are rarely an honest representation of opinion within said activity.