Bi-directional is a double-edged feature.

It means that there is no reliable way of identifying line and neutral wire, which requires more complex double switches downstream.

Also, F is unnecessarily clunky and big and hard to make a weather-proof version of because of the complex shape.

…and has more educationer, languagely.

I promise I’m not a shill. This seems relevant.

Liberux seem pretty transparent in everything they do. https://liberux.net/

Possibly this. https://liberux.net/

This.