Few of us have proper rooms but most of us strive to achieve a better sound after understanding their limitations. The good thing is that it can work both ways, with or without treatments, but either way it takes time and experience to get most of it right. It's nice to have a well treated room, some can achieve even better results with measurements too, but still an untreated one could work just fine. For example, my room is small, peculiar and untreated with tall speakers and a big amplifier, that would translate in a disaster or wrong approach for many, but after some hard work i have managed to make it vanish, so it can be done. Unfortunately there are several variables that affect sound reproduction in a system so judging by pictures alone we cannot get the whole picture but an idea.
Some famous reviewers have atrocious listening rooms!
It’s almost sad, really. Some reviewers I’ve been reading for decades, when showing their rigs on YouTube, have absolutely horrible rooms. Weird shaped; too small w/o acoustic treatment; crap all over the place within the room or around the speakers; and on and on.
Had I known about the listening rooms they use to review gear in the past, I would not have placed such a value on what they were writing. I think reviewers should not just list the equipment they used in a given review, but be required to show their listening rooms, as well.
Turns out my listening room isn’t so bad, after all.