Matt is a master of solo drills. He has already helped thousands upon thousands of jiu jitsu practitioners from around the world, to better their mobility and movement for jiu jitsu.
Matt believes that while training with partners is very important, it is also important to teach your body to flow through the movements. He teaches his students to be comfortable in the specific movements they will inevitably encounter during their training.
He teaches movements that can be used for various things. Warming up for training/competitions & training movements to benefit your jiu jitsu at home without a partner are just two of them.
In conclusion, Matt is a master of what he does, and every jiu jitsu practitioner can benefit from learning from him.