Everyone understood your comment, they were poking fun at it. In my case because I am a little sick of hearing this thing about everyone being a delicate little flower these days. There's quite the superior tone to that sort of comment which gets my goat.
No-one says children should be inside on wet cold windy days, they say they should be appropriately dressed for the weather, thus extending the time they can remain outside and increasing the enjoyment.
I grew up in the lake district. We got dragged up and down rainy windy mountains on our tiny legs in winter because that's just what we did as kids. My family owned a riding stables, we were very outdoor kids. I've done the same with my kids - but I stick a waterproof coat and trousers on them when I do (as did my parents) because I want them to enjoy the experience and want to do it again, just like I did. I don't need to use it as a test of their endurance, I want them to like doing it because it's a pleasant thing to do and I want them choose to do it again as adults.
I dont assume I'm somehow a superior parent because I take my kids up mountains in all-weather, and the implication behind your message are that you think everyone should be doing what you're doing in the Easter holidays. That's quite an assumption.
It's also pretty rude to go around calling everyone else thin skinned, and arrogant to assume you've discovered the reason behind increased anxiety in modern society.... everyone's just a wuss now? Really ?
Perhaps I'm just old and grouchy, but what I really don't understand is why people are so hesitant to tell other adults when something happens which they are not happy about. I don't understand why we must try so hard to be casual about something which bothers us. If I was bothered about collecting my child and realising he wasn't wearing a coat when I felt he should have been and I felt annoyed about it - I'd tell the nursery I felt annoyed about it. Are we so worried about offending the nursey provider we'd rather just continue to be annoyed ourselves and not resolve it in a way which feels adequate to us?
In which case, who is the thin skinned one there? The child? The nursery manager who can't cope with a parent pointing out something they're not happy about without that being a problem ? Or the parent who can't bring themselves to clearly state what they find a probem?
The OP didn't ask whether her son should have been wearing a coat or not, she felt he should have been, was annoyed he wasn't wearing one and felt the nursery was being negligent by not getting him to put one on. If you feel like that - I think you should say you feel like that. Why pretend it's no biggie if you feel it is a big deal to you ?
Kids not wearing coats doesn't rile me up. Irritatingly superior people do.