This! This is why.
As both a lock picking hobbyist* and an IT security professional I don't trust smart locks. And considering just how poor 95% of all residential locks are in the US that's really saying something. Generally speaking any entry method that leaves a criminal on a standing porch for more than a minute - such as picking a lock - is only going to be used by people who don't have nefarious purposes. But smart locks, including not only this but every other smart lock design I've seen, can be opened by means that don't require a criminal to expose themselves for more than a few seconds.
*Yes, I pick locks for fun, but rule #1 is you never pick a lock that isn't yours without permission.