the printing press did not induce algorithmically amplified radicalization in order to serve more underwear ads. youtube and facebook are different.
Every specific case is different; you can always find some facts which differentiate one instance from the 'general case'. It is not enough to say 'this time is different', one must overcome the presumption that general rules should hold.
Mind you, damn thank you for saying that out loud. People on the internet sure love to jump on the wagon of pointing out the differences of instances from a general case that often aren't even relevant for the argument.
These devices have various messaging/social media services that due to social expectations we use to interact with friends, family.
It's very, very hard to laser curate the kind of messaging you get, even if you know how to do it and are willing to do it (for example for some stuff you have to mute friends and family or otherwise block them).
Newspapers were much more hit and miss. You'd have to go out and buy a newspaper, their region was at best national, etc.
It's the proverbial drinking from a firehose.
The printing press was huge in relative terms, though. There was no mass media before that. The average person was unlikely to be able to read, much less to own any books. Communicating across even relatively short distances was infeasible. Most of the media they consumed was either from the church or at least regulated by the church.
The printing press was huge because the normal person's sphere of possible influence grew 100x. Much in the way that we've 100x-ed again with things like YouTube. The relative increase in sphere of influence is similar, the absolutes are massively different.
The printing press was still running at humanly achievable speeds. The new stuff is super sonic. We can't cope with it. Plus with people living longer and longer and the natural neuroplasticity decrease that comes with age, more and more people are vulnerable.
It's the kind of thing that will need to be regulated very carefully and very strongly, because that's what laws are: barriers for when the human psyche fails. Imperfect barriers, but better than nothing.