ZippityDooDah said:
To be clear, he chose to leave on his own after he came to see my posts about the problems with vendor lists as a personal attack, even though his own list was never named specifically at that point. As @Derby noted, he ultimately opted to "pick up his marbles" and head home to launch a forum of his own. Later on, he did get banned here after he turned abusive toward the mods.
Several members raised suspicions or accusations of shilling for particular vendors both before and after he left, which only strengthens my dislike and distrust of vendor lists.
This space has always had, and will always have, a wide range of quirky personalities, and many of them go on to start their own groups, pages or sites to promote their unique approach, which is fine. More discussion is always better than less.