I don't know if you mentioned it or not in your video, but I believe you're supposed to register your RID just as you should do with the drone. If I recall the registration (different brand RID I have) correctly it might require you tying the RID registration to a particular drone. That may kill the idea of swapping RID between drones if you have more than 1 that can't be upgraded internally w/RID.

Then of course, you're supposed to assure the RID is working properly before flight, and not just showing a power-on light.

Link to FAA rule

Then, with the one I have (Z-Lite), you also are supposed to utilize an app that shows whether or not the RID is xmitting properly. Of course, if you're using your phone for the drone control, then I'm not sure how you monitor both at once. There's no assurance that anyone can "see" your RID as it's meant to be.

Here's link to the RID I have.

Zing Drone Lite (Z-Rid)