IMO this helps the value of short one word .xyz, LLL and NNN etc.. Some short two word, maybe but that would come later.
.XYZ is doing what they do best, promote! This sale has just begun and well over 5 million domains registered to date. Although many being parked, parked domains get picked up by Google and other search engines and end users/general public see these links and the extension .xyz.
The more exposure .xyz get's in the eye of the public, interest will follow and that's with any extension but many don't have the drive that xyz appears to have.
.XYZ has been bought and paid for unlike many other new gTLD's, promotion is the key now and I'm glad they're ramping things up.
I don't see this hurting .xyz at all.