The topic of zippers has been heavily debated there. There are tons of high end zippers. That's all you need to know. For the layman, people latch onto RiRi because it's convenient and easy rather than the grade of YKK or other brands like Lampo or MRS or whatever. It's like looking at how tight the lockup is on a 1911 rather than truly checking out the fit, finish and handwork.
They've all been around for quite some time. RiRi just happens to be the new "made in Italy" BS.