Let's not go back to the days of people like me (gay) being prosecuted for being gay, the days of apartheid, of McCarthyism etc etc. Cherry pick the good parts, but never forget the crimes against humanity that happened. Rose tinted glasses and such...
We never needed them when I was a kid, what's changed
I can't judge on the area where you grew up, but in general what has changed is that the world has become more and more car-centric, with neighborhoods that are less and less safe for pedestrians from a traffic point of view. In the past decade or so, the number of pedestrian deaths have been skyrocketing in the USA. Though starting in the 70s and all the way up to 2010ish, the safety measures had incredibly good effects in reducing the number of pedestrian deaths - despite the increase in the number of cars. A big improvement came with stricter enforcement of DUIs.
Aside from that, in the 80s and 90s the whole 'stranger danger' and satanic panic (remember the discussions about how evil pokemon and harry potter were?) things happened. This has lead to boomer and gen-x parents of millenial and gen-z children to get hyperfixated on their children's safety when walking around in a group of children. Because every white van is driven by a potential kiddy diddler and of course it's the school's fault if a kid gets dragged into the van.
Stuff like that is obviously incredibly rare, but there truly was a time that it was very very real and significant risk in the eyes of a lot of parents. Of course the real danger is the pastor/reverend/scout leader/that nice teacher lady who is so good with the kids/that kinda weird uncle who always makes those dirty jokes to the kids but who you allow around them regardless becuase he's family etc etc etc.
One thing that absolutely improved in recent times, is that it's now possible to actually speak up against a respected member of a community who turns out to be a horrible person.
That said, wearing vests is a nice way to be able to recognize 'your' gaggle of kids. They do it at a local daycare near me too, where both neighborhood kids and daycare kids come to play on the school's playground. Sometimes it's purely a practical thing. It's not at all a safety thing, those kids are just on their own playground with no traffic around, it's merely so the daycare workers can easily see if 'one of theirs' walks away with the neighborhood kids outside the fence (think 'picket fence' to separate school from public ground, not something you can fence in the kids with).
Sammi just found an article on t'interweb where it says that in 2014 a primary school somewhere banned the use of ladders for "health & safety" reasons
Ladders are among the tools that cause the most accidents. Yes, the humble ladder. A friend of mine broke his spine in a fall. He recovered, but it was intense.
A school banning them does not want to deal with paying for sick leave or get in trouble with OSHA and stuff. In less litigious countries, it's much less of an issue i reckon. At my school one or two kids had welder's eye from looking too much into an UV lamp used for chemical reactions. Teacher warned the kids. Kids ignored the warning. Kids learned what welder's eye feels like. I did warn the teacher that he's definitely taking risks himself - as in risking some parents getting angry and demanding that such "dangerous things" aren't used anymore in chemistry class (where plenty of other dangerous chemicals are used...)
And of course, banning ladders can lead to much more unsafe scenarios. But that's the perverse thing - if you live in a highly litigious place, it might be necessary to ban the things that you can get sued for, even if that makes things objectively worse.
Where i live, they'd laugh in your face if you fall from a ladder at work and try to sue your employer for that. But you *would* get the standard paid sick leave for enough time to recover from all but the worst injuries. Because no one deserves to have their life and finances destroyed in a stupid little ladder accident.
The only thing you could potentially sue for over here, is if the ladder turned out to be objectively faulty and hadn't been through the yearly OSHA tools-at-work inspection.