As usual, the trick while reading these is to replace 'millennial' with 'people younger and more attractive than I am'. Also applies to people who begin sentences with 'I am technically a millennial but..'.
Wasn't it plato or Socrates who complained about those damn young people who are good for nothing, complain about everything, and can't even speak proper Greek?
To their credit though, the Greek civilization DID fall soon-ish, so maybe the YOUNGs are _really_ screwy idiots who are NOT on fleek.
EDIT: Apparently I'd misunderstood the meaning of 'on fleek' for a long time.