I’ve been more and more impressed with the Yolink offerings over the last year. Some clever engineering, good product, reviews, reasonable prices. But at the time of this writing as you know, the only integration with SmartThings is via Alexa routines.
One thing you might not know is what SmartThings requires in order to utilize matter devices. For one thing, you must have a smartthings/Aeotec hub.
See the community FAQ on requirements for using matter with SmartThings:
FAQ: What do I need to add a Matter device to the SmartThings app? Do I need a bridge router device?