Frankly, when you are singing or speaking, your audience doesn’t care about your technique. They came to listen to you, because they want to be touched by your story. Yes, vocal technique is very important. It gives you the freedom to sing and speak in a versatile, creative and healthy way.
But however impressive your technique is, it is nothing more than a tool, a means to a goal. The real purpose of a singer and a speaker is transferring emotions, conveying intentions, so the audience will be touched. So how do you do that?