The teachings are real. Increasing light is real. But each must gain it in the very same way as Christ and all those who have followed Him gained it.
A good teacher will always work himself out of a job by teaching how to find light without him. A bad teacher will call attention to himself, and try to make others dependent upon him. The worst teachers are those who want to control those who will listen to them and to dictate what they do, what they think, and how they must follow. Christ, and the light He brings, liberates, making each person an agent for themselves. Satan's plan is to put us into bondage, controlling us and making us fear.