How can a partnership be limited to two people? That seems illogical and discriminatory, not to mention at odds with general partnership law.
In any event if California gets out of the marriage business it won’t be able to prosecute anyone for bigamy/polygamy any more.
Marriage = One man and One woman AT A TIME with all the divorces happening. When I was growing up in the 1950s divorce was considered just as bad, as gay marriage is now. Now people get a divorce at the drop of a hat. They get bored and get a divorce. I think they should make divorce much more difficult and expensive to get, except in the rare case of actual physical abuse.