Things are moving on.
My nanas son died at 3 months old, in the 50s. They were offered any support. My mum (was about 4 at the time) still remembers being woken by her mother's screams while her dad came into her bedroom and told her not to come out and slammed the door. Her and her siblings were offered no support.
Around the same time My dad's school friend died. They weren't even informed in school. They knee because it was a fairly small village, so found out from their parents.
In the 90s, while at school, my brothers friend committed suicide. We were told in assembly. We were advised there would be people available to speak to. I have no idea what that looked like. Our parents weren't informed, I told mum when I went home. She knew the boys mother and didn't know.
About 10 years ago my dd (she was about 7) class mate died of cancer. They had trained counsellors available. Dd was upset but I wouldn't call it traumatised.
My ds is autistic and we opted to keep him home during lockdowns as the change in routine at school was upsetting him. A constant reminder of what was happening. The school were fantastic at providing practical support while I home schooled and worked full time. And when we went back they were great at supporting us on return. Not professional counselling needed. But they really pulled out all the stops to get home back in and in a settled way.
I do think having appropriate support is far better than what we had. I do also think it can be taken too far. Mainly, fueled by parents who think their kids recieving any bad news will leaving lasting damaging. Such as the example given above, where a teachers child died and parents want support for their kids.
We will all hear of people we know having bad things happen, treating it as though everytime a child hears these things they need masses counselling and support, as a given.
I also think these parents don't really have a clue how sparse these services can be.