Just happened to me too while I was playing some game online. They think we millennials should be gardening instead of gaming. Bitch we are the pioneers of modern tech. We grew up drinking internet.
The first time I remember being called generation something was "generation X", then "the screwed-up generation", "the MTV generation", then suddenly I was on the "millennials" and now I ended up a boomer.
I was raised though by those being born during the 50s on stories about how easy I was having it while they had to go uphill both ways to school through the snow.
I got that a while back talking about old video games. "Eww you played DOS games? What a boomer"
No, no that makes me mad. I was learning to navigate the DOS shell to set up Duke Nukem (skills I still use at my job today) while my boomer parents yelled at me to stop wasting my life on the computer and come in the living room to watch another six hours of Bonanza reruns.
I like to think back to when I was a young lad, making fun of old people. The ones who got angry reinforced my naïve perspectives, and the ones who took it in stride with humility taught me to not be so judgemental.
It's hard, but we millennials have to exemplify humility for the younger generations, even though we didn't have many role models ourselves.
It also means more people will actually use it, so its kind of a double edged sword I guess; but its heartbreaking seeing a generation that is supposed to be tech savvy only be able to understand social media ui and the settings app on their iPad.
The way I see it: if someone dismisses valid concerns, I'm going to give their opinion less weight; if they do it with hasty generalizations, I'm going to give it zero weight and maybe mock them for being incompetent.