Yeah at some point folks get too old to change. You can try to get them off Fox News at least, but it just depends. Sometimes you can’t. Sometimes they really can’t even learn a new kind of remote/cable or whatever.
Younger folks are deep down the influencer rabbit hole, and I don’t know what to do about that (other than pushing Fediverse) since Big Tech has such an iron grip on everything. I mean, the future is definitely cyberpunk.
I think the flip side of this is Facebook or wherever the link was pushed to your in-laws (which is what I’d guess happened) feels… empowering. Those apps are literally optimized, with billions of dollars (and extensive science, especially psychology), to validate folk’s views in the pursuit of keeping them clicking. Their world’s telling them they’re right; of course your retort will feel offensive and wrong.
They’re in a trap.
And I still see lot of scientists posit ‘why is this happening?’ unironically on Twitter or something, which really frustrates me.