When a "Christian" is given the opportunity to witness by preaching The Gospel any hesitation is between them and God. All I can do is make a personal judgment that their talk doesn't match their walk.
Matt. 10:32 Therefore whoever confesses Me before men, him I will also confess before My Father who is in heaven.
I've really been blessed to be part of a church that has a Theological Seminary associated with it. Because of this I've met young people just "jumping out of their skin" waiting for the chance to witness. Here at FR we see just the opposite from the RC & EO posters. In fact they mock The Gospel calling it foolishness.