This is one reason why it is much better to reference one's information sources. Stating something as fact based on your own imagination is deceitful. Claiming as Biblical authority one's own opinion is dangerous. One need not necessarily cite every reference, but as this program has been available for decades with notes, downloadable MP3, and heard all over the world in many languages, I think citation would be important.
I have been guilty of this myself at times, and that is probably why I am so touchy about it. I was gently admonished to not allow pride to destroy me or make ministry ineffective. Rather than just proclaim something as true, one would do well to just state it as opinion. This is general, not an attack on a brother who has long since gone on to glory. This might be how we got monogamy only as the standard doctrine, claiming authority where none exists or supposing a bit too much. The only authority I have is from the Word of God, to Him be the glory for His wisdom and truth.