"General disillusionment" means an overall feeling of disappointment, loss of faith, or becoming disenchanted with something or someone, usually because of unfulfilled expectations or discovering unpleasant truths. Full definition
In Salford, anger with Hazel Blears is level - pegging with general disillusionment about politics (theguardian.com)
My concern is that emergency efforts to prevent what can not be avoided are likely to lead to waste, foolishness, international conflicts and general disillusionment on an epic scale. (dotearth.blogs.nytimes.com)
Even the gentle Albert Einstein contributed to the general disillusionment. (firstthings.com)