Pardon me, but I thought it was the "Pinball Hall of Fame" and not "Tim Arnold's House of Hospitality"?
Seriously, if you don't know what it's like having to maintain a bunch of games for the general public, be a little more tolerant of the peoples' attitudes that have to run these things.
I have my own place now, with close to 100 machines. We aren't open to the public. We occasionally have parties, and a few of the public come in and after every event, at least 20% of the machines have some sort of malfunction that takes me at least two weeks to fix. On top of that, there's always someone who comes in and treats the machines poorly or has unsupervised kids that cause issues - not just pinball issues like swinging from a plunger like it's a set of monkey bars, but leaving food and spilling drinks all over the place, that I have to clean up... after everybody is gone, I'm the one there, who has to clean up the whole mess. It's not all its cracked up to be, but we do it because we like to share what we have and hope others appreciate it. Sometimes we get grumpy. I apologize in advance.
As far as Tim, I don't find him "inhospitable" or un-friendly. When I first met him and commented about how he didn't seem very friendly his response was, "You want a friend? Get a dog." Now that may seem offensive, but I found it hilarious. On other occasions where I got more of a chance to know him better and chat, he's been very gracious. I don't blame him for being a bit apprehensive about meeting people. He's very busy. He's one of the pinball community's great benefactors as well as great characters. I wouldn't want it any other way.