I've been using it for a few years and never had an issue. I've been using it on my pixel 2 XL from day one and it's been Rock Solid.
But, honestly now, how many times have you tried to open your phone by simply swiping up while far from a trusted location?
As I detailed in my linked post above, I was 5,000 miles from home for the better part of a week only to find that my Pixel XL wasn't locking as it should have been. And, no, that is not the only example I have of this failure; it is just the one that I chose to write about.
Do you use any other things in the trusted lock settings? I use my Bluetooth headphones, my fitness tracker, car Bluetooth. Mine definitely works. Sometimes at work I'll leave my phone on my desk and walk to the back of the warehouse to receive a shipment, and when I get back and swipe up on the screen it's locked because my fitness tracker went out of range. Make sure your not using anything else in those settings.