To be honest I read the post and skimmed over the article, so I didn't see any problems with what you quoted. I went back and read a bit more of it.
I would have to say that the writer of this may be embelleshing just a bit, just to make the whole thing a bit more interesting.
I read a few of the responses at the end, and unless they were forced to reply on how great it was to be a toilet slave, they seemed to be pretty happy with it.
As I said there may be some people who want this, even if it has some health issues involved.
Unless I skimmed too fast I failed to see what happens if the submissive becomes gravely ill because of misuse.
I have been told that it would be fine to chain me in the basement on weekends, if I wanted to or not.
If I want to be released, I have been told that I must beg for it, I have also been told that he will pass me off to another if he decides that he is done and bored with me.
Not saying that such things will happen, but it was part of our agreement.
There are always negotiations involved and I would think that the person who wrote this article, loosely mentioned that, but you cannot fully hold a person against thier will and then publicly declare it.
If someone is not aware they are being abused or coherced into it, then I would say yes it is clearly abuse. There is no consent.
I consent fully to whatever is done to me, in fact I even asked for it. I have a Dominant that is able to provide me with what I enjoy, he does not abuse it, nor does he push.
Humiliation is not an easy thing to understand, and for the people who do enjoy it they are fully aware of what they are participating in.
There have been times when I have been pushed to an emotional edge, but I know when enough is enough. He also knows when it's time to pull back.
I don't condone anyone who coherces another into something they don't want to do, but if it is something that both parties agree on, then I don't see any abuse involved.