I have started to notice over the past two months that my 6P will randomly reboot (but not the bootlooping issue) - I realize it when I use the fingerprint scanner and it asks for my PIN instead. This week I experienced a system freeze for the first time and I could not get it to restart. After about 10 minutes I tried again and got it to do so. It's running fine but battery endurance is noticeably down and I haven't used it any differently than usual.
Now, I see that Android version updates end September 2017 (security updates end September 2018) and that the Pixel 2 is rumored to be out in October 2017... Scheduled obsolescence?
With no international travel scheduled for the next few years I'm starting to wonder if moving to the iPhone on a MVNO is the way to go.