And compared to the entire subscriber count and the many who would not show in such sites because they don’t raid at all?
Obviously it only represents those those that use the forums, but even Blizzard’s “what game mode do you play” poll had modern raiding (keyword modern, as classic raiding is higher than dragonflight raiding) as the lowest done activity on either classic or modern WoW (3% less then world content)
And those that would prefer casual non-instanced play would also be more likely not to use the forums and just play the game to participate in the poll.