I think you are on to something there. I think that only children are more likely to have been raised thinking they are really “special”, and having expectations that everyone will recognize their wonderfulness.
Deplorable parents are undoubtedly advising Deplorable millenials to hang up when a telemarketer calls, or walk away from dopes with clipboards, thus causing an underweighting in polls. Thus, any poll etc speaking of Millenials being this or that are suspect.
Finally, remember that by most accounts, at the time of the Revolution, 20% were Loyalists, 33-45% were Patriots, and the rest were ballast. If you replace Loyalist with statist, and Patriots with Deplorables, we are right where we started.
I thnk we are seeing history repeat itself. The left/Loyalists are painting the Patriots/Deplorables as intransigent dolts who must be brought to their knees and Kiss the Ring, for their own good. In turn, the Patriots/Deplorables are not going quietly into the night, using new media to outsmart the Establishment and bring otherwise neutral parties to the side of truth and freedom.
In turn, the kids of Deplorables likely are as much "underground" as are their parents in polls, etc. The whining Antifa losers get all the airtime. Where the Deplorable, responsible Millenials ARE visible, among other places, is on memes and the like....have you ever seen how many pro-Trump meme pics there are vs anti-Trump? I doubt that's coming from a bunch of geezers. And, as noted here, the younger military personnel are, well, MILLENIALS.
Thus, I wouldn't so easily assume the millenials are largely commies or narcissistic oafs.