Guru-speak is the result of static thinking, which does not adjust to the situation. Ultimately, all guru-speak fails because the situation will inevitably change. Change is the only constant in our universe. For example, weather conditions change and, therefore, no boat is perfect. Therefore, concentrate on becoming a better sailor, rather than on building the 'perfect' boat.
Reality shows that humanity's way of thinking is failing. Yesterday's solutions have become today's problems. Often, guru-speak is an excuse, rather than wisdom. Therefore, criticism of accepted knowledge and morality is unavoidable. We have to be dynamic thinkers in a dynamic universe.