I have a 2018 coming up on 13,000 kms. So far I have had two chips (can barely see them because I got them repaired almost immediately after they happened). This is pretty common though since I lived in Calgary at the time, a city known for excessive snow and ice control leading to rocks being flung around more often. My wife's 06 Civic was driven there for 3 years, not a single rock chip on the glass, but quite a few on the bumper and hood. I attribute this to the more aggressive slope on the Civic's windshield - if rocks were to hit the windshield, they're more likely to simply glance off.
I do notice that the CX-9's front and rear glass does seem to scratch very easily though. Not sure how this could happen as I'm usually very careful when washing my car, though admittedly, there were a couple of times when I used the foam brush at the coin-op to clean the windshields and windows. That could very well have done it. I don't have any pics now, but I'll take a couple later and post them.