It’s called microtargeting, all big tech companys are sorting people in groups, just by their use of the service. It starts with simple things, for example: cats or dogs? And this goes deeper to your religion or sexuality, politics etc. Created mostly for advertising it got used by political parties. Check the Cambridge analytical scandal. If you easily able to sort the people for your target you are able to manipulate your targeted people.
Newest scandal for microtargeting came from the EU-Commission with the chatcontrol.
Millennials are split into the older and the younger ones. I am one of the older ones, and I don’t know what the heck is going on with the younger ones.
Remember, it’s a cloud messenger, not a secure messenger. It’s cool to have all chats on every device, but by default, they are unencrypted. I message there, too, but only nonsense.
I really hate the social media discussion about this. And the comments in the past teached me, there are two different ways of learning math in the world.