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What do we do with the terms "husband" and "wife"? People who want to use them use them, them as doesn't don't. Simple as that. 'Even' hetero couples often call each other 'partner' now.
Since "husband" originally had to do with tending livestock, good riddance.
And marriage has had many permutations through the ages. For most of the time it involved ownership and essentially slavery. Time to refurbish it, and extend it to anybody who wants to participate.
If that means (consensual) polygamy (or polyandry), so be it. Not my business. (There's a whole sub-culture of 'polyamory' already...)