As an “unofficial” old-head, I don’t recall any conversation about Bill Russell being the greatest. That’s mostly because championships were never the standard for defining who was great and who wasn’t back in the day. Bill was highly respected and considered the best defender ever, but I never heard him talked about as the greatest player. I often heard Wilt mentioned. Heard Abdul-Jabbar mentioned. Dr. J was undoubtedly the most popular player, and it wasn’t close...particularly in his ABA years. So he was often mentioned. You had random names mentioned like Big O and Elgin Baylor...some (for whatever reason) even threw “Black Jesus” Monroe in the conversation...but it always came down to Wilt, Kareem, and Doc....At least until Magic and Bird came along. Fact is, its hard to really say who the best ever is before Mike. Magic and Bird didn’t play a prime Alcindor/Abdul-Jabber. Alcindor never played a prime Wilt. Doc’s most dominant years were in the ABA...though he did revolutionize the game in both leagues.
These conversations are always fun, but subjective. Everyone has their own criteria for determining who they believe is the greatest. I’ve argued that Willie Mays was the greatest baseball player ever, but most people still say Ruth. If you tell me Aaron...i really couldn’t dispute it. They were all top tier players. So, I think arguments could be made for Kareem, Wilt, Doc, Magic, or Bird...and all arguments would be valid. My pick...Kareem, who was the definition of unstoppable in his prime...but I could be persuaded with any of the others.