I don't use that, but from what I see it seems to have a drop-down for name selection, just like any other instance of this. Certainly not "infinite names". A quick Google even shows a forum thread in their official forums to request specific names to be added.

So good for them on crowdsourcing the name list, I suppose, but for games that have a set release instead of being an ongoing, live database service the lists tend to be very limited and more often than not anglocentric. Even in sports games like NBA or FIFA where they just let you pick any existing name in the commentary database.