Does anyone care if the group reaches 10,000 members?
It’s an arbitrary number designed by our quaint use of the decimal system.
Is the community different than from when there were 9,999 members?
Only identify and recognise milestones that genuinely matter.
Recognise things the community has achieved in the world. Highlight how members contributed to the community milestones.
Talk about what the community has helped members to do.
Let members discuss how the community has changed their lives.
Any time you highlight an insignificant milestone, you denigrate the impact of significant milestones.