Earlier quoted context omitted.
Sorry, that's not what they mean. My carpet is not changing color, my mother's face isn't melting. That's not happening on a physical level. My sober perception is repeatable and verifiable. It exists no matter my state of mind. It's novel to make yourself see things that are unreal. It's novel to have your emotions fluctuate wildly. But it's just novel, and unreal, and nothing more.
Psychedelic perception is also repeatable. And sober perception is not reliable.
Huh, weird.