I don't see how this pertains to Adam. Danielle and Adam BOTH wanted another kid and for Blayke to have a sibling. They also experienced fertilty issues when TTC for both Blayke and the quints. Neither of them asked to have 4 additional kids to Blayke and her possible single sibling. It just happened. They're also living in Texas and are christians, so they are presummably against abortion and selective reduction, and from a moral standpoint I can understand the guilt and agonizing decision of selctive reduction.
Adam also got to make his own decisions, he quit his job and started his own company. Obviously he needed Danielle's support in this. He has a wife and 6 kids to provide for. Think of the health insurance, the weekly groceries, clothing, house bills, etc. for a family of 8. He can't just up and quit his job especially when his wife disagrees on something of this magnitude. However, she supported him in the end and he found his own work. Locating to Dallas for some partnership is stupid though. Danielle was right in not going through with that. Their entire support network is right their with them. It would be crazy to leave that behind. They built their life there and already planted roots. But in the end, that didn't matter the partnership made it work with the distance.