I honestly don't feel qualified to vote anymore as I haven't seen or know enough about the remaining players game.
I know what you mean, but that was already the case at #1. I´ve never seen Bill Russell play, but I still know that he´s #1. Tbh, the term "greatest Celtic" is already abstract, imo, and with him this whole list, as it´s completely subjective what makes a great Celtic, and it really only counts for Basketball fans. A Sumo-Wrestler in Japan is treated like a Half-God, he couldn`t care less about "Celtics Lore".
But that´s the point. Since "Celtics Lore" is totally subjective, we all come together to make this more objective. We all picked up storys about the Russell or Cowens-teams, even if we never saw them play, may it be through books, or a family member who was at the finals game in 59, or whatever...
For Celticsbloggers, it´s important wether Sam Jones is a top ten Celtic or not. We are the people who give meaning to the term "Celtics Lore", so in the end, Celtics fans of today are the only ones who can decide about the "greatest Celtics", and it´s almost secondary wether you actually saw the Russell-teams play or not.
Btw, I chose the voting system with the three votes so that noone has to settle for a certain player, because at this point in the poll, it´s impossible to pick one player over another, so your vote is more of a rough direction than a definite decision. In the end, I think it really doesn´t matter wether Ed Macauley is #12 or #19, the fact that the diehards on Celticsblog voted him into the top 25 speaks for itself.
Even if he never would´ve made the list, I´m pretty sure it wouldn´t bother him after all these years.

Just my 2 cents...