Greg,
Your so right, both men have the same line of dogs and both are TDHA members.
I question whether David Thoms is an annual due paying member of the TDHA. Typically, folks who are members are proud of that fact. I could be mistaken, but my memory serves no recollection of David mentioning any membership outside his black mouth registry. I know for a fact that I asked about any other involvements and can not recount any.
I question whether David Thoms had ever paid a membership due to TDHA. (You might make him some kind of member by default because he has devoted so much to maintaining high breeding standards for BMCs, but he's not driving around town with a TDHA sticker talking about how great it is to be a member.