The owner is a bad person that yells at you anytime he feels like it. He will find ways to make you feel inferior and break the morale of the techs. He is just an overall jerk and working there will just have you depressed and unhealthy.
The positive comments are clearly written by him and not by real techs because there has not been a single tech that has been happy there. The one tech that worked there the longest recently quit because he couldn't take it anymore.