What exactly did you mean by "contingent"? I interpreted what you wrote as meaning that since there aren't a vocal group of polygamous families making themselves seen and heard, it was somehow okay to ignore them because they were so insignificant.
Maybe I misunderstood what you were saying, but I think my point still stands: that the marriage equality campaign is not really about equality for everybody because it does not include minority* groups like polygamists.
*Although in many cultures polygamy was the norm for hundreds and thousands of years and only recently been banned.
> since there aren't a vocal group of polygamous families making themselves seen and heard
Good so far.
> it was somehow okay to ignore them because they were so insignificant.
It's not about "ignoring" anybody because of their "insignificance." It's about legislating around what is healthy, on the whole.
I haven't done a lot of research into polygamy, but my sense based on the little I have been exposed to suggests to me that in many cases where it occurs it is, in practice, an unhealthy power dynamic.
A good comparison for this is the age of consent. Sexual relationships with minors are illegal because in many/most cases they involve an unhealthy power dynamic. Now there are exceptions (and the rules are pretty arbitrary in that a 17/18 year old couple is a completely different thing than a 15/30 year old couple). But on the whole this is good and important.
Now I could be completely off on my understanding of polygamy in practice. But I have a lot more information about what LGBT relationships are like in real life and therefore feel far more conviction that they are healthy and should be fully accepted. Show me people in healthy polygamous relationships who want to see them state-recognized and I am open to changing my mind.
The "healthyness" of them is important, not only to protect vulnerable people from unhealthy power dynamics, but because if legalized, the state would need to become involved in all sorts of questions like what happens when a polygamous marriage is dissolved. What if just one person leaves? How does custody/property work in all of these cases? What if there are disagreements about power of attorney among remaining spouses when one spouse is in the hospital? The legal aspects of marriage get complicated quickly when there are more than two participants. Unless society has a good understanding of what these polygamous relationships mean and how they function, it would be pretty hard for the courts to decide what is "fair" in these difficult cases.
These are the reasons I don't think you can reason about this in a logical vacuum. You can't just extrapolate and say "well if you can marry one man, the stat is being unjust if you can't also marry two." Life and laws aren't a logic puzzle. They are based on our understanding of the human condition and our ideals about a fair/just society.
Maybe I misunderstood what you were saying, but I think my point still stands: that the marriage equality campaign is not really about equality for everybody because it does not include minority* groups like polygamists.
*Although in many cultures polygamy was the norm for hundreds and thousands of years and only recently been banned.