Why is everyone saying we should be doing DRY but we really end up defining the same shit everywhere?

Does separation of concern breach DRY principle?

I have dtos, entities, viewmodels all throughout different layers I have to define. I swear I've changed 8 files just to introduce a new field!!!

Betterproramming pub, Why do you put images of code in your tutorials so I can't copy paste!!

Is it just me or everytime I look up a question and I land on Microsoft Q&A site, theres never any accepted answers?

Rather you get, this thread is closed after all these non helpful answers from staff

I'm thinking about creating a chat app in Azure/c#/websocket. Is this a bad idea in terms of costs or will I be better off going something like node JS/aws?

Why are JavaScript coders called engineers (ie front end engineers, node engineers) but dotnet and Java are called developers?