Yes, that would be a button within arms reach, something I explicitly prefer over the voice assistant. I use them frequently.

I don't have just one light per room though, some spaces like my workshop or living room have a lot of lighting options, and flitting around the room flipping a bunch of switches is clumsy and unnecessary. The preference is always towards automation (e.g. when I play a movie in Jellyfin, the lights dim) but there are situations where I just need to ask for the workbench light.