Until someone at Samsung notices it and removes this undocumented API via OTA, since this is probably unintentionally left in so it would be pretty easy to remove without any ordinary user noticing
You should use Google Home, they can’t simply kill that without a lot of backlash from users. Example:
Create a Virtual Device in Homey and choose the Kettle device type. In my case, my Smart Monitors are not natively in Google Home so I need to create a scene in SmartThings that turns them on and off. Then, install the Google Home mobile app (a Google Home device isn’t necessary). In the Google Home app, link SmartThings and Homey via + → Link apps and services → Works with Google.
You can now create automations in Google Home. Go to the Automations tab, create a new automation, tap the menu and choose “Previous household editor”, since the current editor doesn’t support starting scenes yet. You can select the starter “Virtual device turns on” and the action “Control smart home devices”. In the list of devices, scroll all the way down until you find “Set scenes”. Here, you’ll find all your SmartThings scenes. You can now trigger actions in SmartThings with the virtual device. Repeat this process until you have all scenes that you want.
Google Home is just such a core part of smart homes that Samsung can’t just remove it, if they do then many (ordinary) users will probably leave.