Read that quote in context:
You should only ask practical, answerable questions based on actual problems that you face. Chatty, open-ended questions diminish the usefulness of our site and push other questions off the front page.
Is this question practical? Answerable? IMHO, it's borderline - the asker is soliciting opinions, hoping to extract from them a rationale for such replacement. A better question might ask what deficiencies third-party checkouts correct.
The biggest problem with that question is there's no clear problem statement. The asker holds a dim view of 3rd-party solutions, considers them unnecessary, and is looking for confirmation of this. Note that the accepted answer closely mirrors the asker's opinion stated in the question itself!
- there is no actual problem to be solved: “I’m curious if other people feel like I do.”
I strongly suspect this question will need some serious clean-up in the near future, and it has already attracted a couple of non-answers.
Rather than changing the FAQ, I suggest you look for ways to change the question to:
Right now, there are a few decent answers amidst a lot of opinions and hand-wavy "this is what I do" responses. If you want this to be useful a month, six months, or a year down the road, planning for that now is essential.