Don't feel bad - no one expects you to be omniscient.... yet!
That said, we may as well close this topic down to prevent having two on the same topic... best to keep any comments on the article in the one place.
Through corruption of the Dhamma comes corruption of the discipline, and from corruption of the discipline comes corruption of the Dhamma. This is the first future danger as yet unarisen that will arise in the future. You should recognize it and make an effort to prevent it. (AN 5.79)
"If you stand up and be counted, from time to time you may get yourself knocked down. But remember this: A man flattened by an opponent can get up again. A man flattened by conformity stays down for good." - Thomas J. Watson