Many millennials are reaching their "peak earning potential" years. They're special because it's often around this time that people make choices around having children, how to sustain families while working, etc.

Many millennials can barely afford rent, are struggling to own anywhere where there are any jobs, and have nothing saved for retirement - something that should be coming for some them in twenty years time.

Economies take a long time to recover and rebuild. We're reaching a point where it's likely that many millennials will retire without ever seeing a strong economy. Even if we all decided to rise up and eat Bezos, Gates, Musk, Zuck, and co, by the time that wealth trickles down to us, we'll be too old to get any of it. That's why millennials are special.