I agree, I'm not saying OCG is a bad guy, but, there is some value in looking at that wording, and thought process.
Atheism = Stop growth and exploration... be close minded to things that can't be proven by science... close your eyes to new possibilities.
It's weird because most of us think of religion as being close minded, being afraid to look at what's wrong with the Bible, being afraid to recognize when the answers given by apologists fall glaringly short, being afraid to continue to stand up and say... "No, if God ordered evil things, God is evil. No, we don't need an ancient myth to have morals... (and so on)".
Most of us would believe in God tomorrow if god was real and demonstrated it. That's pretty open minded.
On the flip side, god has essentially been proven to be equal to all other imagined myths... equal... performs just as well as... there's plenty of evidence that a magical being is not required for anything we see around us, including life. There are lots of contradictions and impossibilities about god that are hand waved with "well, he's mysterious".
I think it's close minded not to consider what those implications mean. i.e. Like a child refusing to believe the tooth fairy isn't real. That's close minded, right? Not open minded?
When you consider top scientists like Neil deGrasse Tyson: https://www.youtube.com/watch?v=3sApQ80QRiE
You can tell by listening to the man, he just loves to learn, he loves to discover, he loves to be proven wrong... he loves to find out what the real answers are.
James Randi. Penn & Teller. The guys from Mythbusters.
All of those people are among the most "Go through life with eyes wide open, experiencing mystery and finding answers" Kinds of guys you can think of.
So yeah, I'm not offended by Old Church Guy, I can't speak for everyone but I think he's well liked and respected by most of us. But it does sort of illustrate what's wrong with thinking of atheism in the way he did when he was at his crossroads.