Does it count when apple puts out a statement that it is a problem? Keep in mind when a company says "a small number of customers" about their own product, it probably isn't very small.
"Outside the affected batch, a small number of customers reported an unexpected shutdown. Some of these shutdowns may be normal, because the iPhone will shut down to protect its electronic components. To gather more information, we will add an additional diagnostic feature to the iOS software update that is released next week. This feature collects a variety of information in the coming weeks that may help us improve algorithms for managing battery performance and shutdown operations. If such improvements can be achieved, we will deliver them through further software updates." And this was all before they would have implemented the 10.2.1 change.
People don't always blog about every time their phone cuts off, but I had more than one friend say their phone would just die despite appearing to have a 30% charge. They just gripe for a couple of minutes and boot it back up to move on. If you only see it happen every few days, you probably won't be fuming yet still greatly annoyed at your "junky" old phone. Apple would have lots of detailed diagnostics tracking the frequency auto-reported to them even if the users themselves do not call their local paper.