While the example given was admittedly a parody, one does not need to look very long in the various jobs boards to find real-world examples which are just as preposterous as the parody.
I have found plenty of "Millennials" who are dependable, conscientious, and hard-working. Most of them have two jobs and some are running very small businesses. They are not making much money.
YMMV, of course. I think the image of "Millenial slackers" is overdone.
More than 20 years ago my husband would come home complaining that the people he worked with (college grads) could not write a decent sentence in English. These would have been Boomers. It is epidemic now, but originally was caused by the decline of literacy in the U.S. more than half a century ago.
When you study the history of how reading was taught you find that in the 40s the reading programs began dropping phonics, and by the 50s they were dominated by the kind of “See Spot, look, look,” mediocre curriculum that basically ruined our educational output. Now we have a hard core of 40% that can’t read, another 40% that don’t like to read, and the top 20% to carry the load of the information society.