The responsiblity is on the author to communicate at a level appropriate for their audience. It's not on the browsers to encourage/discourage certain content.

The amount of people confused and incredulous in this thread should demonstrate that simple words doesn't make something more understandable.

Those people can look at a dictionnary when they don't understand said word. I am not a native speaker and I do it all the time.

It has never been easier and it enriches my language, why would I want to avoid that?

> Those people can look at a dictionnary when they don't understand said word.

In fact, the browser can and does facilitate this very well. You can already just double click then right click and search on any word to get a definition, and I'm pretty sure there are dictionary extensions that make it even easier than having to go out to a search engine.

Writing assistant services like Grammarly accomplish this.