Sure. But you knew what this comment was trying to say. It is obviously saying that what happens on the Kindle is between the customer and possibly Amazon, specifically that authors should not be involved. They got their money. That part of the transaction is complete. I know you realize this, it's annoying to read the constant "not your keys not your coins" reframe.
No. The author incorrectly thinks they "own" the "content" like with a physical book, which is the prerequisite for all the discussions following it. I pointed out, factually and correctly, that they don't own anything (other than the license) or have any control over anything.
And I am not being cynical. That is literally what is on their web page, e.g.
https://www.amazon.com/dp/B0BTZT9PLM