I think early portrait photographers copied the style of the painters who painted affluent clients.
If done in their studio, they were the north window light, Victorian furniture, drapery and elaborate props kind of thing. You couldn't afford the painter so you hired a photographer to look rich. Or you were new money, and wanted the "undated" medium called photography.
Perhaps in it's day this look too, got stale.
I will say that if this was your home, most people would think the portrait is fine, but if it's just a "prop" house then you look like a poser having your picture taken there.
As a viewer it is interesting, but since most portraits are bought or commissioned by the people in the picture, then it may be embarrasing to have your picture hanging in your house, that contains a background that gives the impression you live in a mansion.
Michael