This is actually not a good advice, from my experience. If we don’t monitor, refactor, or improve the code, the software will rot, sooner or later. “Don’t touch” doesn’t mean we don’t ever think about the code, but we make the conscious choice not to modify it.
Remind me of some quotes:
Recently, I came back home after 2.5 years of studying and working abroad. Home (family, friends, scene, etc.) didn’t change much, but I definitely felt something off that it was hard to describe. I grew out of it, I suppose.