Since most such pieces are written by journalists, or written by people who think about these things but are also writers, they tend to focus on the idea distribution medium aspect of today's technology. So that would be the internet, or social media platforms, or chat platforms, etc. That's the most easily comparable part to past information technologies such as the printing press.
But the novel danger with what we're facing today is not the fact that everyone is on social media, or that stuff can go viral. Even though these are turbocharged versions of past technologies, they are still versions of past technologies (being turbocharged can still make it meaningfully different, but for now I'll ignore that). The novel danger is personalized data collection. It's the fact that major companies can built extremely accurate and granular profiles of every single person on their platforms.
This is completely unprecedented. Throw in even rudimentary AI, and I can target my message to match every individual's unique psychological profile. This was never possible in the past. The most you could do is target something based on a few broad aspect of someone's personality. Where they lived, what religion they followed, what language they spoke, etc. But there were thousands if not millions of people who filled that mold, and there were vast variations within those people, which still allowed for non conformity.
Today, however, you can target every individual and even the same individual differently depending on whether it's the morning, or evening, or if they are working or relaxing.
It's this that's truly novel and truly dangerous. You don't even need Social media to be involved for this to be a problem. The Chinese government, for example, famously has a highly intrusive citizenry score for its citizens based on a variety of such micro targeted factors. And pretty much every government across the world is also doing the same. Corporations have gone even further because they have all the data.