The “40 or 50 years” comment was in reference to the Dunham marriage, not Soetoro or Obama.
I think the point is that, if indeed the Dunhams were never married, it would lend credence to the hypothesis that Stanley Ann and Barack Jr.’s supposed marriage was also a sham, common-law at best.
Oh sorry. I thought we were talking about Soetoro. Thanks for clarifying.