I'd slightly amend that to say that we have some Millennials in our group at work, and "some" may be like that. (Had a really funny discussion recently with one of them who was complaining about a task the boss gave her and said, "I don't know why I was asked to do this--what's in it for me?"
To which I flatly responded, "Your paycheck."
)
But, we also have some that are very level-headed, will listen, accept suggestions, and just want to do the best job they can. In short, in my opinion, it still comes down to the individual in the end.