Bests & Worsts Reviews from Amazon

These went from the best wipers I'd ever owned to the worst. I bought a pair about 6 months ago for my mazda 3, and they were streaking within a month. After about 2 months, with bad streaking, I RMA'd them. the RMA pairs also streaked in about a month. Undeterred, or possibly thinking they had a bad batch of rubber, I tried again with this refill. No dice. Couple weeks in, and it's already streaking. What happened, PIAA?