On 2010 how Carter husband did not realise she was sterile while he knew the deal

Title. I’m rewatching sg1 and currently on 2010, this just hit me. The ambassador was aware of the deal and that a % would be sterilized. He was genuinely surprised by the real amount but given that he knew the situation but how did he not understood earlier that’s why they couldn’t procreate with Sam?

3 years trying, he should have connected the dots.