This was quite an unfortunate read.
I bought a 2015 Impreza Sport Limited last year. It was the first car I had a cracked windshield on. A rock came up from a semi and hit it me on the highway (65-70mph). Happened plenty of times before on other cars.
I was so upset about it. A brand new car, now with a chipped/cracked windshield. I had SLR come out and clean it up.
Seems the weak windshield is a trend for Subaru? Out of all the cars I have owned (never a Subaru), not once have I had a rock chip/crack the windshield.