@teo_audio,
Unlike some in this Forum (based on the replies thus far), like you, I notice set designs in movies and TV shows, and find them fascinating. A lot of my interest stems from a buddy of mine, a "Brother From Another Mother", who was in charge of purchasing items for sets at a major U.S. film school. I helped him from time to time when he had questions about audio equipment, and the brands and trends that were popular in certain eras.
I found that some producers and directors delve deep into the set and background minutiae, while others hardly give it a passing glance. Those that found it extremely important created much more interesting visual works, in my humble opinion. Of course, audio companies use product placement as a form of advertising -- all companies have been doing this since the dawn of the motion picture industry.
If it makes a viewer want to investigate their brand or product, it has done its job. Does that consumer behavior make the viewer someone who is "obsessed with their image"? Far from it....SMH