Well, he's on the right track, but a sermon isn't prayer- it's one guy talking to a roomful of listeners.
He's tapping into the impetus for the house church movement, though- people are sick of showing up, prepared to minister to others, and getting zero opportunity- since all the "real ministers" get to stand up on a stage with amped mics and instruments, and the order of service is very neatly scripted. So people get tired of being scripted into a charade, and leave. They would rather actually minister to someone in the real world, than the fake world of churchianity.
A little openness is good for spiritual development, and powerpoint, etc. doesn't help spontaneity.
So, you have read both Gene Edwards and Frank Viola.? I too prefer the house church movement but not because my local congregation uses PowerPoint. I prefer it because of Ephesians 4:20, which to me is the sum of Christianity and my one great need.