A very interesting post Rider.
I agree it is hard to find companionable companions for self contained touring. There aren't many of us to choose from. And we must really cooperate and agree with the routing and lodging decisions. We also need to cooperate on the shopping, cooking and cleaning chores. Money is always an issue - financial arrangements should be clearly agreed upon in advance. As a person looking for compatibility, there should be a checklist which all companions agree to before hand. I am hereby asking that the ACA develop such a checklist, and add it to the "How To" section in the ACA web site. [please respond webmaster]. Certainly, Rider, you should have known ahead of time that this guy wasn't even planning to bring along a tire patch kit!
As far as "bigoted comments and opinions of others", I'm at a loss. I don't know how to screen companions for those sorts of things...they don't seem to surface until you get to really know each other.
At any rate, it sounds like your coast to coast across North America was a happy journey, and I'm happy for you.