This location used to be listed as "planned" on the old GOFAST map in 2020.
I don't remember exactly when the old map went offline, but I know the last change in the XLS file that powered that map was in November 2020.
I think they stopped showing planned locations after that, and I have never heard of Brünig since.
I visited the coordinates of the old planned marker yesterday, that would have been in the parking of Restaurant Waldegg. There's nothing suggesting a charger will be installed here.