Poor CCC is uncommon in cables manufactured after 1990. Of course there are inexperienced manufacturers producing this sub par cable somewhere. But this is where core alignment is absolutely necessary. You are not going to get a good splice with a v-groove machine on fiber with poor CCC, doesn't matter how many times you try. So why worry about this now? Some of us are maintaining these systems and when they have outages or want to splice into these ancient backbones, obviously you can see the need for core alignment. Furthermore, I have used both types of units and can tell you there is a larger fail rate on the v-groove than the 2 out of 600 splices you're implying. I'm assuming you did these tests in a simulated field environment. In any event, most high-data customers only allow core alignment; the problem is inexperienced technicians passing off v-groove splicing as comparable to core alignment when it just isn't.
This is CABL.com posting #142555. Tiny Link: cabl.co/mLfr