This is a very radical teaching, not for everyone. People often turn away from such a teaching; they don’t want to hear it.
Apparently, the more "Americanized" version of Zen involves making the person feel special.
I don't want to get all "you fucking millennials want a fucking trophy just for showing up," but there's something completely patronizing about this. A modest amount of dedication to an endeavor is not a great feat. Suspending judgement on something, and just doing it for a while, is not a great feat.
To say that meditation, and training your mind to let go more easily, isn't for everyone is like saying that knee exercises aren't for everyone. I'm sure there are people who don't need to carefully strengthen their knees, but the basic skills are available to anyone who has knees.
