I guess it depends on whom you hang out with and talk to. I completely agree that some people can't understand the difference and speak accordingly. But I don't think we should redefine words based on the lowest common denominator of understanding/usage.

And in this case, it's especially important not to redefine "majority" because if we do then there's no word left to refer to an actual majority. That's not the same thing as JFK conspiracy theories.