Im 26yo but I still remember the old times when internet and computer was just something for "Nerds". My father is a programmer so i had an own MSDOS-computer since I was 3 years old.
I think 4chan had its peak around 2006. It was still an underground website but was also very popular. I was only lurking around the time because I was to young to actually say something meaningful or intelligent. There were tutorials passed around on /b/ how to hack atm's, vending machines and IP-cameras. DDoSing the CIA-Servers and shit like that. There were also regulary whistleblowers who leaked government documents on /pol/. It really felt like a secret society and being part of a revolution. I always hoped that we would be able to smash the mainstream media, overthrow the government and fuck over rich corporations.
Nowadays it is full of disgusting dumb normies. The boomermeme isnt just a joke.
Most people on imageboards are really 30+ senile "boomers" who completly forgotten our roots and cause. Most of them are also newfags who never cared in the first place. 4cuck is absolutly unusable at this point.
I dont think that anyone on IBs is younger than 18. The younger people only use their dumbphones now and dance awkwardly on tiktok or younow. Most of them also dont have the computer skillz anymore.