I have to agree with ramfish. Alot depends on how you date. I also only dated one guy at a time. I only once went out with two different guys at the "same" time but they were just "a date" and not "dating". I think that that can be a big difference to some people. It's all in how you or they define things.
I also think that because this is still a mainly mono-culture, claiming poly allows youth to date more or gives them a reason why it is okay to date more than one person. If they are doing it openly as an "adult" poly relationship should be than why can't they call themselves poly as well?
Life is about the journey and not the destination,
so what better way to know life
than to wander all the roads and paths set before you.