If it is as bad as you claim, I really don't understand the issue. There is no need to discuss anything with anybody. Just leave. Find somewhere else to train. You don't need to "fix" them. You just need to find someplace you feel comfortable and clearly this ain't the place.
Also...you're not going to be able to "fix" them. Their ways are their ways -- one person isn't going to change them. Leave, explore other options elsewhere, don't look back or concern yourself with what others are doing. If you've decided it's not for you, it is no longer your concern.