I joined after the Apollo debacle started with Reddit, so I joined what had the most users at that moment and it was lemmy.world. But I already had a good idea of how these federated apps work, so I wasn’t super worried about which I picked. I imagine a random normie instagram user would delete the app as soon as they saw the list of servers, if they even got that far.
My dad is 70 in a few years and still has Boeing, Northrop Grumman, and various other aerospace companies asking him to consult for them in his retirement.
I don’t totally disagree with you, but let’s not generalize.