The only smartbulb feature I need is dusk-to-dawn for my porch lights, and I found lightbulbs that actually have it builtin.
Good old electronics that don't depend on the cloud.
My guess is that the post was submitted with incorrect timestamp, and despite being adjusted to the correct one, it doesn't seem to be taken into account correctly in Lemmy. Maybe the post was set far into the future and it's gonna be stuck there in new until forever 🤣
(Un)fortunately, I don't see the issue on the local instance I'm on, otherwise I'd check the timestamp in the database just to figure out the root cause.
But the benefit of a smart switch is that it remains "always on" for remote control, and physical actions on the switch also reflects on its state at the software level.
That said, I'd go with stuff that don't need online connectivity.