Maybe you are referring to other things he has posted elsewhere but his opening post here was entirely reasonable.
I disagree because it's just not reasonable to suggest not listening to opposing positions. Even if those positions are presented in a direct hostile way (which what he's referring to, so far as I've read, has not been), it does not delegitimize the opposing claim.
What is being suggested by the OP is deliberately taking measures to shield oneself from the possibility of being wrong. This isn't much different from the governing body telling witnesses to stay off of apostate websites and not go to college. It's for the same reason, to avoid facing a slap by reality and having the illusion fall away. It's an unhealthy lifestyle that has resulted in terrible things in our world.
I honestly understand not wanting to walk through the door of reason and choosing to remain coddled by dogma. I've been that person. But educating myself on the damage being that person has done to our species and being brave enough to walk through that door has changed my view of life from an apathetic waiting game of Jesus to a passionate desire to actively make the world a better place. This is what happens when you set aside dogma and faith.
ill qualify that by adding it may be unhealthy to remove faith for some. Such as older ones who have wasted their entire lives. But I do not think this is such a scenario.