It seems to me that John's reactions to receiving and having to express gratitude tell us pretty much the whole story in that one little strip. As we saw, he exploded in a sort of blind rage because he believed that he didn't get the level of gratitude he actually deserved while (as always) ended up being utterly dismissive of Elly's equal struggle on his behalf. What I believe to be going on inside his and everyone elses' head is that he thinks too damned highly of himself and not enough of those around him. Despite his (and Lynn's) obvious belief otherwise, it just isn't possible for someone to sustain the sort of groveling gratitude that he clearly expected of Michael without turning into someone who can't function in society. It's as absurd as Elly's belief that Mike's silly little crush on Martha would naturally be followed by them dropping out of junior high and living in sin or John's own belief that praising people for doing what they're supposed to do would somehow turn them into selfish monsters.
What he and the others don't realize is that this explosive over-reaction to not getting the absurd level of deference they expect of those around them and the accompanying tendency to withhold thanks out of entitlement and a fear I'll get to later is that it resulted in men and women who can't thank people because of an instinctive belief that praise and gratitude are traps meant to lead one to being yelled at for being insincere. Not, of course, that we can expect John to admit this. Since the dumb-ass doesn't admit to having a violent temper, a blinkered and self-serving view of his family and a seemingly bottomless level of resentment, he'd be as ready to admit people are right to see him as a humorless, tyrannical ogre as he and everyone else would admit that people who are better than they are at things aren't doing to with the specific intent of mocking them. More on that tomorrow.