The idea behind it is nothing like the kosher lamp, which is a cover over the bulb. This is a different type of switch.
Rabbi Oelbaum’s endorsement is limited to the melachah aspect, but he alludes to the zilzul Shabbos issue when he tells you to speak to your own rav.
I don’t think the kosher lamp has an endorsement which says, “ask your rav”. I bought an urn made under Jewish ownership, and the endorsement, where a rav says it doesn’t require tevila, doesn’t say, “but ask your rav”. The hechsher on my box of cereal doesn’t say, “kosher l’mehadrin, but ask your rav”.