I think this is misguided reasoning. Everyone starts somewhere, and the hallmark of reasonably competent writing is a ramp-up. Whether it’s one sentence or one chapter.

I think failing to define acronyms is a violation of just about any style guide out there.

Communication is a majority of engineering so I think these things are very important.

> If you don't already know what CORS is, you're probably not a Web developer and don't need to know.

This is an appallingly poor and misguided take, and goes against the most basic rules of writing technical documents. Docs need to be clear, unambiguous, and self-contained. The very first time a acronym is presented, it must be after the full name is presented.

It takes less than a sentence to do the right thing. There is no excuse.

Sometimes OPS people get the job of fixing CORS for developers who don't understand how it works exactly.

I work with a client who built a web app in... Vue, I think. For unknown reasons they decided that it would be better that the APIs they need to call to live on the same domain. At the same time, the developers decided that the API microservices should not return CORS headers. Instead it was left to operations to hack in CORS headers in the webserver/loadbalancer.

To be fair, there are many web devs who have never needed to worry about cross origin resource sharing