@lazyscot @cmconseils yes!
I think for some people: getting older brings frailty and makes you less likely to meet new people and this makes you scared - scared of change and things being done differently, scared of "others" who don't share your culture/beliefs/worldview. Then add in your only reference to this being salacious headlines and algorithms designed by psychologists to press your buttons - all to get you to buy and keep buying.
Everyone is selfish to differing degrees. When people get scared that nobody is going to look after them it makes sense that some might feel they have to look after number 1.
But there's some really good other points in this thread too. Thanks for sharing!