Sadly I've never seen a PATA to SATA adapter that supports SMART stats either. I spent quite a while late last year on eBay looking for a direct USB to PATA only adapter on eBay, with no luck though, all I keep finding are those combo adapters ☹️
The last ancient USB to PATA only adapter I once had did actually support SMART stats, but apparently the adapter's firmware didn't support drives over 128GB ☹️
Sigh, maybe I'll stumble into something someday at a thrift store or something 🤷