Since you asked......
My feeling is that generationally, everyone goes through their 20's in the same way. They're adults, trying to understand the world they find themselves in, wondering who they are. Some are good, some not so much.
I read a blog by a millennial a couple of years ago, where she wanted to have a job with meaning, the resources to be happy, yet not a slave to a job or money. That was me! I just didn't have social media as a platform for my angst. That blog convinced me personally that it isn't a generational thing, it's what you go through in your 20's...
My personal conclusion is firstly, millenials are just like others going through their 20's and 30's. They're just the first group that had access to and used social media to discuss these things, which had the unintended consequence of glamourizing their generation and their plight. Prior to this, people in their 20's were told to shut up and wait their turn.And let's face it, whatever the "American Dream" was, is not available to this group. Crushing student loan debt and a country that hasn't been this divided since the 60's has served to turn millenials off from anything older generations have to sell. There is no trust, because that trust has been destroyed.
Secondly, what constitutes "work" has changed. It's not like your day Coco, or even mine. And yes, there are those that work hard and get that. However, it is to be expected in my opinion that since work has evolved into "knowledge" work, and manual labor/trades are generally looked down on (for no good particular reason) that millennials are not going to be looking to lemonade stands, when they actually can see the abyss better than any other young generation, and are generally turned off by their prospects.
Another quote that I respect goes something like "Young people will pay the price if they can see the future." No future has been provided that millenials want to work for, and I think they have a point. It isn't about work ethic, it's about the cliff we all are collectively hurtling towards.
Hope sells. Whether it's MLK Jr, Reagan, or Obama, what is needed is a vision that people can buy into. Without that, chaos ensues.
Just my two cents....