ZD,
You really don’t have to bother them with the video. All you have to is ask them “Do you reccomend using the kosher switch as a lechatchila in a residential setting”.
If it seems that there rePonse is not in conformity with what you understood from the video, you can ask them that. If they question the video, I doubt they will fell it a bother that you bring it to their attention. Quite the contrary.