That is definitely not the intention of this mod (to use from map view) and I am not sure what would have given you that idea?
The info on the mod page clearly states the mod's best use case.
These are useful for making / testing many kinds of circuits.
Which is what I use it for mostly.
In addition to this, as a bonus you can do the following!
Also enables toggling Constant Combinators with the same key.
Which becomes invaluable for testing/making circuits and regular game play alike.
Whats more, vanilla combinators, power switches, requester chests and the like can all NOT be changed/used from map view so I don't see your request being implemented here anytime soon. And really, I wouldn't want to see that implemented in this mod.
I understand though it can be an advantage to activate combinators/switches from the map view as I have wanted to do the same before also. Thankfully a mod already exists for just that.
Have a look at https://mods.factorio.com/mod/remote-switch