nonsense. on both Google+ and Facebook you can quite easily lump everyone into one group/circle and leave your default posting level set Public.
just because a service provides more options doesn't mean you have to use them if you don't want to.
edit:
granted, twitter's culture is more open to following strangers than facebook. my experience on Google+ has been a nice blend of the two extremes, so far.
I don't think it nonsense. I think there is a threshold where the maintenance/anxiety from the provided options exceeds the value of the service. I think its a sweetspot for any service actually (not just Google+ and Facebook).
just because a service provides more options doesn't mean you have to use them if you don't want to.
edit: granted, twitter's culture is more open to following strangers than facebook. my experience on Google+ has been a nice blend of the two extremes, so far.