What I meant was you have not established its effect on evangelism
I did answer this but if not I will explain.
What this means is that it is hard to evangelize people in the west because simple gospel tracts, open air sermons, and the like are very often ignored. For example a Carnival is coming to town and I intend to pass out several hundred million dollar bills, and place a number of (other style tracts) on as many cars as possible. Last year I must have placed tracts on more than a hundred cars. My guess would be due to the influence of postmodernism, and the loss of absolute truth, most will just toss the tracts, ignore what they say, not even read what they say, and such because in their view Christianity is no different than Islam, Mormonism, Buddhism, and the like. PostModernism breeds= pluralism and relativism and so absolute truth is lost, and in the mind of most truth is what they create and imagine it to be.
Last year I was chatting with someone of this mindset at this same carnival and asked him to jump out of an airplane without a parachute, and put his hand on a hot stove. The man refused, but I asked him why refuse because I did not believe in gravity, nor hot stoves!
The PostModernist selects the truth that he feels is right, and rejects others, so their logic is not consistent.