I mentioned this in another thread earlier, I was at a work meeting the other night for some training and I noticed the majority were using iPhones that were primarily 6/6s and even some iPhone 5s models. Some of the employees I was talking to hardly any knowledge about the iPhone X at all and had no desire to want to upgrade from their phones because it does exactly what they need it to. That's called real world experience versus somebody like us who are more prone to want to upgrade to the latest device because we are more tech oriented.
I see a LOT of 5S phones every day. 6 vs. 6S can be harder to spot quickly, but I see tons of those every day. It's true - people who post here are not typical of Apple's market at all.