I don't have any rocks to throw, you bring up some good points. But in this day and age if I can get a person to come to church and it is a 1.5 hour long sermon, and someone text a little or nods off once in a while you would think that most of the time that the person is getting some good out of the sermon. I mainly don't agree with the public chastise, but to your point maybe he has already talked privately about it. I think I can say to Streetrats point, when he was on his "rant" he did seem desperate, and he did say he felt good after all was done. Most preachers ask God to speak through them, Jesus use me as your puppet, your mouth, speak though me. I did see the Fox News report that reported that the soon to be married couple no longer attend the church
If the sermon is more then 25 minutes long I'll get up and leave. If you can't get your message out in that time period then you've got problems as a communicator. 25 minutes is about the max attention span for the majority of congregants.