Perhaps the youngins are more cognisant that it's all monitored. Knowing your employer can read everything and it _will_ be used against you has a chilling effect and I'm pretty sure that's part of it.
We had such incredibly heinous group chats on our Slack that if an admin perused through the logs we'd be instantly fired and the company shut down right then and there lol. The paranoia drove everyone nuts which made it more fun.
