I don't think it's a silly objection, but I feel it's too abstract, ignoring certain practical realities that aren't really attempting to do what you say "pull the public sphere under one's own roof". This feels like some kind of "plato's world of forms" type analysis of something that's more simple and practical than anything else and is motivated more by convenience and thrift more than something like an "impoverished world-view". Your comments feel to me a bit like you are looking down on the parochial plebs for their simple pleasures.