I have been married for 35 years and it is no one's imagination that married women sometimes are automatically assumed to be the secondary member of the marriage. The good news is that it happens pretty infrequently now, compared to when I was first married. Keeping your "maiden" name then was seen by many to be a direct slap in the face of your husband, you automatically became Mrs. John Doe in virtually all correspondence (and if you loved him, were supposed to be thrilled about it), and it could still be difficult to get credit in your own name. I can still remember when women could be fired from their jobs, just because they got married. Anyone want to go back?
Is it worth the effort to point out the remaining symbols of sexism? I think it is today for the same reason it was then. The only reason things are different now is that some women then took the time to raise the issue, even when they were belittled for their efforts with some variation of "why are you making such a big deal over nothing?" (Sound familiar?) The changed world we have now was built on the backs of women who were laughed at at the time. The least we can do is to acknowledge that.
If it's no big deal, why shouldn't companies just go with what the couple decides? Usually the paperwork these days comes back the way we send it in - my husband's car is in his name with me as the co-owner, my car is the reverse. But when I did all of the work to buy into DVC, deliberately putting my name everywhere as the primary owner, and someone somewhere went to the specific effort to reverse the names so that suddenly my husband was the one getting all the correspondence, I do wonder why. After 35 years of often watching my husband's name become "primary" when I signed something first, but never seeing my name become "primary" when he signed first, I do assume now that someone decided that my husband "should" be primary because he is the man, and it does irritate me.
So in this case, I called the DVC and nicely told the woman I spoke with why I was upset, and asked her to have it changed back to the way my husband and I decided it should be in the first place. The whole thing took 1/2 hour out of my life. That 1/2 hour, added to the 1/2 hours that other women spend calling or writing the DVC (and other organizations) is the only thing that will prevent our daughters and grandaughters from having to make a call like it down the road.