I agree-there's nothing wrong with the means nor ends.
But, I'd bet that most people, after having failed a big endeavor that they put a lot of energy and time into, would feel at least some mixture of doubt/discouragement/disillusionment. Pile onto that resorting to less respected work (in a culture obsessed with money/power/prestige) and I can easily see how the parent commenter would feel some sort of humiliation during those times.