I write for Wikipedia because I believe that accurate and neutral information about climate change can help us make informed decisions and make the topic less polarised. Also, people are wrong on the internet. I fear Wikipedia is getting inaccessible for a lay public, as us experts like to correct people that are wrong on the internet with fancy words.
Quick and ugly check to see if your writing is too difficult: The Hemingway App. A readability score (Flesch Kincaid Reading Ease) over >45 is fairly okay. Another rule of thumb: 4S: short words, short sentences, short paragraphs, short articles.