Oh no! Thanks for posting this here, Steve; this is the first I've heard of it. Bill was such an excellent friend and one of the first people to enthusiastically welcome me into the hobby a few years ago. He was also so kind and generous. He and I also shared obsessions with a few particular obscure props, which always made me feel a special quirky affinity with him.
Bill was indeed a member here and a big supporter of TFW early on before we even took the site public, serving as one of the founding group, even though he wasn't able to be as active as he used to be on the TPZ and RPF some years ago due to health and financial difficulties in the past few years.
His participation here, on the RPF, and TPZ—and his friendship to those of us who knew him directly—is a great loss to the community.