>Saying communications were more effective 20 years ago

Of course it's debatable because reality can be measured in multiple dimensions.

Is it faster, yes. Is filtering out the massive amounts of bullshit communications easier? Not really, especially with content aware spambots than can be ran by the millions. It's easy to get crushed by bullshit asymmetry. For me this makes most communications less effective because I have to spend even more time figuring out the actual poster and their motivations.