Where did you get that from?

> The Simple English Wikipedia is for everyone, such as children and adults who are learning English

https://simple.wikipedia.org/wiki/Main_Page

> Other people may use the Simple English Wikipedia because simple language helps them to understand unfamiliar topics or complex ideas.

https://simple.wikipedia.org/wiki/Wikipedia:About#Simple_Eng...

I mean, sure, but it's not just accessibility. This is a massive oversimplification.