From what I remember, Google wanted their own chipset, so they could build it around what they wanted to do with the pixel software... instead of having to build the pixel software experience around the Snapdragon. They definitely took the right approach if they want to customize the pixel following their own vision. Plus they can support the Tensor better and longer than Qualcomm's standard Snapdragon support.
The Tensor should keep getting better, and from what I've seen in many benchmarking comparisons it's already good enough to keep the majority of owners happy... especially now that most of the bugs have been worked out
Now if you need the bragging rights of the fastest chip, you'd better pick up an iPhone, because the latest Bionic is kicking Snapdragon butt, like it always does lol. But for real world usage all the latest chips will get the job done just fine
