Do I Want to Break Down Solids?

All good comments. Wasn't my intention on starting the sensor debate again, but good thoughts. I was more reacting to the thought of not using something to break down solids in you tank. Like some said solids will naturally breakdown, but if I don't put something in the tank to help will it create a "dam" inside the tank. Probably not if enough water is used. I guess everything I've ever read or watched has always inferred that you want your black tank to be "mush" and this guy who is a "professional" is indicating the opposite and supports his position by saying the "pancake batter" affects sensors in a negative way.

The Video: https://www.youtube.com/watch?v=wr4TGBPyPe0

What I've heard: https://www.youtube.com/watch?v=GyWMyZ02_7M&t=225s