I didn't knew about 100 posts requirement for legendary rank. I think there is nobody with legendary rank as for now. We have to wait for admin to confirm this requirement or find a reference like OP has suggested.
1000 the other one meant.
I did see one member with Legend rank. I will try to quote that profile once I see it again.
Update: Here is the user
RianDrops. I feel glad looking on his profile.