I’m weary of people with a string of initials after their names and a ton of self-righteousness in their advice misinforming others that it takes six months of monk-like sabbatical to create an hour’s speech.
If you’re truly an expert, you should be able to speak extemporaneously and entertainingly on your topic for an hour, handling questions and using examples. Period.
If you need to prepare as though you’re launching a missile to Mars, then you’re self-centered and trying to get laughs, attention, ovations, and ratings. Or, you don’t know what you’re talking about and have to make it up. That’s pathetic.
To paraphrase Bill Clinton: It’s the audience, stupid.