Matter only sort of solves it because a lot of Matter devices (most in my personal experience) use WiFi and often intentionally neuter their Matter support to "encourage" you to use their app and/or cloud integration with a major voice assistant.
I have a pair of Govee ceiling lights that have a RGB+CCT primary downward facing light and an addressable RGB accent ring. The ARGB ring only exists in their app. As far as both their Matter support and their official API are concerned these units have a single element which is the downward light, the ARGB ring is not controllable from any third-party systems.
If these were using Zigbee, Z-Wave, or Matter over Thread they wouldn't be able to do this but because they use WiFi they can.
I'm going to be opening one up soonish to see how hard it'll be to just replace the controller with one running WLED (or even reprogram the controller already in it).
I have a pair of Govee ceiling lights that have a RGB+CCT primary downward facing light and an addressable RGB accent ring. The ARGB ring only exists in their app. As far as both their Matter support and their official API are concerned these units have a single element which is the downward light, the ARGB ring is not controllable from any third-party systems.
If these were using Zigbee, Z-Wave, or Matter over Thread they wouldn't be able to do this but because they use WiFi they can.
I'm going to be opening one up soonish to see how hard it'll be to just replace the controller with one running WLED (or even reprogram the controller already in it).