Look up the term "straw man argument".
Sigh......why is it so hard for you to fathom that "marriage equality", can be, and is, used to promote consentual plural marriage? America's favorite plural marriage family, the Browns, have gone on tee vee numerous times, expressing their support for ssm, and comparing that "struggle" with their struggle. Why not just accept it. As much as you and all the other SSMers want everyone else to accept gay marriage, you should also accept plural marriage. Marriage equaltity demands that you do.