It's not an impossibly ambitious bar. Many people have cleared it in the past, and many more will clear it in the future (including Slava the OP).
i think @beachstartup's point is that the problem with treating this as a "lesson" is that you're imposing a value judgment on other peoples' value creation by saying that what they're doing, possibly their LIFE'S WORK, is NOT WORTH DOING just because they may not "augment the human condition for a huge number of people in a meaningful way".
For example, any failed venture could probably be said "not to augment the human condition for a huge number of people in a meaningful way". Goodbye scientists who are trying to cure cancer but haven't succeeded yet. No offense, patio11, but bingo cards? Come on... try to augment the human condition a bit.
It just comes off as judgmental and moralistic bs.