I was talking specifically about PapaStevesy's comment complaining about calling catering to extroverts a drug-fix and catering to introverts normal, and then going on to imply that introverts are unnatural (too heavy a word, but I can't come up with a better one) because "we're social animals."
But as to the OP, I'm not here to argue against the idea that introverts enjoy social interaction. Because they do. It's just mentally and emotionally exhausting to do. What I will argue against is the idea that you need to fulfill that social interaction with the people you work with, especially when it requires going to such lengths as a cross-country flight like in OP's example, who clearly didn't want to do this nor enjoyed a moment of the whole circus of the experience.
At that point, we're not even talking extrovert vs. introvert.
As somebody who spent way too long working at a shitty job because I loved the people I worked with, there's a reason that I never saw any of them outside of work apart from the one guy that I still play games with online. My life doesn't revolve around work. That's not what gives my life meaning. It's simply what I have to do in order to be able to afford to live. I'm not saying be an asshole or don't get along well with the people you work with, but I am saying that I'd rather spend my time with friends, family, and community. Expecting the people you work with, especially at a remote job, to be part of those 3 simply because you work with them is silly. And at that point, going through a once-yearly gathering is simply ritual, nothing more.