What I am about to say is, first of all, off-topic, and second, not meant in any way to be offensive. Please accept my apologies in advance if it comes off that way.
Having witnessed many discussions here and in other circles, especially among Theravada practitioners, I am fascinated by how precise everything is expected to be and how much some things become an issue.
I will absolutely admit that it’s my Mahayana/Zen training showing here.
When I look at the quote you posted, this is what happens in my mind: “Sure, we sit, putting aside thoughts of good and bad, greed, lust, chasing after things and goals, likes and dislikes… If one is caught up in mental activities, one can’t possibly observe anything with clarity… In fact, even when observing an aspect of the body, one can see through and past it… observing it as empty… and so on…”
This would be how I’d tackle this if someone asked me anything about this quote. And, should someone say to me this was short for the hindrances, I wouldn’t flinch for one moment before I said: “Well, yes .. it’s a circle, not a straight line… None of them exists on its own, so if one arises, the others are somehow involved”.
This pattern repeats over and over again, and I find it very interesting to realize how much, at least in my tradition, we rely solely on our experience of and insight into the dharma.
To clarify, I know many, many Zen folks who have never read anything from the suttas or Agamas, and who couldn’t mention what the Buddha directly taught about anything, unless it comes from a third party (an ancestor in the lineage, a teacher, etc.).
I am simply noting the positive and negative sides of these two different approaches.
Anyway, my apologies for disturbing the discussion.