Every Yale user around here that I'm aware of has been very satisfied, myself included. Most of us are using zigbee versions.
The biggest issue i had was installation. The latch/deadbolt needs to be perfectly aligned and able to fully extend. My manual deadbolt needed a bit of a nudge to lock. I had to fiddle with it until it latched effortlessly. That is likely an issue for all battery operated locks.
Not sure why they dropped zigbee support for the Assure 2. I have the Assure as a deadbolt and lever-lock; both with zigbee. Flawless operation for the last 3+ years.
I think there's confusion about the Assure 2s... AFAICT, the Assure 2 is a new lock design, but (at least for residential/consumer), it's still comes with the "old" z-wave 500-series ZW module (I.e. the ZW2 module).
There are some of the new 700-series modules ("ZW3") out there on eBay, but it sounds like those are being sold by commercial installers who didn't them in their installs for whatever reason.
IIRC, Yale said they'll start selling the ZW3 modules to consumers on the Yale website in 2024. Right now, it's still just the old 500-series on their website.
I just installed a new Yale Assure 2 Lock and I can confirm it is being sent out currently with the Zwave 500 module. Worse then that it still installs by default with only S0 encryption.
So far the lock has worked fairly well, but it is certainly a little bit of a bummer that even today it is so far behind on the radio being used.