My reasoning for thinking this is not a good analogy is the supercar is a device that cannot be used/exploited in normal operation. It is illegal to use the top speed or acceleration of a supercar. It cannot make traffic move out of the way for you. A Supercar will not get you to work any faster than a Toyota Corolla. The Corolla will go fast enough to send you to jail, just like the Supercar. You can't use the Supercar features without legal risk without going to a special place (the race track). People who own sports cars and supercars try to rationalize this away but it's true. They are really just driving them around to show off and can't realistically use the cars capabilities in the real world.
If a fancy DSLR or Mirrorless camera is like a supercar than it would mean everyone who had a DSLR or Mirrorless camera had to use the camera with one fixed prime lens that had bad quality and was locked at a small aperture. You had to use it in green "full auto" mode all the time. You had to set the camera up to run in it's slowest mode, and you had to set the camera up run at a very high ISO and to store photos in a high compression JPEG setting.
Only when you went to the special zone of photography would you be able to use the extra features. (Changing lenses & settings for maximum effect.)
Most people who carry DSLRs & Mirrorless cameras around can exploit their advantages ruthlessly in the real world whenever they want.. nothing at all like paying for a sports car or supercar and just using it as a show-off token.
I am not arguing against Om's point though. I'm in the same boat as him, I have a pretty expensive camera setup but have bought minimal camera gear since 2012 and use my Smartphone more and more.