I agree with you about what Mr Olson is calling equal justice with regard to who can marry who. Why not polygamists?
this is absolutely implied by Olson's reasoning. The homo-activists claim as part of their fold people who are bisexual. To accommodate who THEY are would require at least four in the "marriage" relationship - two men and two women.
And I'm sure NAMBLA is about ready to wet their pants over the implications that this argument has for them.