Jeff registered this very forum.
Nah, the forum was kicked off Bitcoin.org in 2011 due to concerns about the lax moderation-- even I was part of that discussion.
In terms of commits: Matt and Luke predated Jeff on the project (by months in Luke's case). Pieter came nine days after him, Wladimir 51 days after that. I was 8 months behind on the commits, though most of what I do has never been coding-- I my logs show that I was the most active person in the development discussion channel the same month as Wladimir's first commit.
Characterizing someone who came later or who was earlier by mere days and less involved as "senior" is a bit of an insult.
I too have no time for seniority dick measuring. Its a vague appeal to authority that gets us nowhere, and moves the discussion away from the primary issues..
Everyone who contributes to making bitcoin a viable peer to peer cash system into the future should have their voice heard.