Thanks for your feedback, Caesar. You're right, there are certainly downsides to injecting the button directly into the page content. That said, a lot of our users are not very technically experienced, and we found in testing that they found the button much easier to find and use when it was directly on the page they were reading. We talked about it a lot, and in the end we had to go with the real-world usability for our audience over the more abstract best-practice principles.