That's called the "milieu" which is just a fancy term for the general vibe of the therapeutic environment.
And yeah, hospitals SUCK at that. They'd never let actual greenery in the units because of their potential to harbor bugs or trigger allergies, but the plain/sterile look of everything makes it feel pretty alien to most patients.
Pediatric hospitals are the only ones that get it right - the walls are colorful and filled with happy imagery; the ceiling lights often have inserts that make them look like little patches of blue sky and clouds.
Idk why hospitals that care for adults always look so damn depressing. That'd be a great project idea, to get some pediatric hospital interior decorators to do their thing in other facilities!

Glad it's a Buddhist saying this. My knee-jerk was to compare the benign influence of violent videogames to the radicalizing influence of violent religions.
This may just be my lack of familiarity with Buddhism, but my understanding is they're generally pretty chill and actually make a positive impact on society. Other religions, not so much.