I'm gonna have to go digging for the source, I'll edit it once I find it. The creator of the guide stones wanted his identity protected but people found out who he was. Dudes real big into eugenics, it's 100% telling people to do Eugenics and not at all concerned with population bottlenecks

Edit: could've sworn I'd read an article about it but it was apparently this episode of last week tonight.

TL;DW: it's not 100% confirmed who the person that commissioned the guide stones is but it's likely Dr. Herbert Kirsten, a man who was very outspoken in his support.for David Duke.