Yeah for us people not in the entertainment business, the artist not getting his drinks paid for sounds like a major first world problem. But when it comes down to it, it's all relative. When your company is taking you out to lunch, but doesn't buy drinks, it comes off as extremely tacky. And of course, Andrews is not a true employee of Marvel Comics on their payroll, but he has been freelancing with them nearly exclusively (perhaps entirely exclusively, I'm not sure) for 16 years. To call him a visitor, putting him in the same category as the people in this thread is just rude.
It's easy to play the tune of "Poor Comic Book Creator, Who is in the Position, We'd All Like to Be In" but all companies could afford to treat their workers better. Andrews has probably made a ton of money for Marvel and their actions clearly show they don't value him.