While there's much in that with which I agree, it's missing something. The negative. Some of the most stirring "spiritual experiences" I've ever had have made me feel very uncomfortable. Our last moderator, Jordan Cantwell, delivered a sermon in our sanctuary, which challenged me then, and still challenges me now, and not in a comfortable way at all.
If spiritual experiences only comprise the pretty, the pleasant, the loving, the comfortable, then we have entirely missed out on the possible spiritual benefits of deserts, of dark nights of the soul, of abandonment and despair. They, too, are teachers.