I find that the argument is quite weak overall. To state that the scriptures do not reinforce that there were literal presentations of media in preaching is factual but that would be difficult to do the issue harnessing of electricity didn't even occur until well over a thousand years later, then we have the invention of the television, etc... However we do find the teachings of Jesus, whom I believe that we will agree was the greatest preacher ever, utilizing stories, illustrations, or even a word/concept being debated here, drama in the use of the parables. Form of media, if you missed it. It is nothing more than a story to help reinforce the point. If your drama or media overtakes your sermon then it wasn't through quite as well as it should have. Weak preaching can be countered by planning. My preaching professor's words ring true again and again. "What is the point?"
If it is not scriptural shame on you. If you think that God can't work through media, then you are limiting God, shame on you again.

My fear is that you will miss the upcoming generation if you don't find creative ways to reach them. Think and be creative. Paul tried to do whatever was necessary to win as many to Christ as possible. I think that call is upon all of us. Don't limit yourself.