I'm quite surprised that everyone here is questioning your ability and truthfulness of the situation instead of taking giving advance on the face value of your

I'm quite surprised that everyone here is questioning your ability and truthfulness of the situation instead of taking giving advance on the face value of your assertions. If you believe in your assessment of the situation, I would do one of 2 things. Either look for new opportunities or don't feel guilty spending less time at work. Use the time to better yourself.