If you do web development or design of any sort, there's an excellent chance you’ll encounter WordPress as some point. Like death, taxes, and identity theift, it's inevitable.
In 2021, WordPress achieved something incredible — powering over 30% of the web ( (35.5% according to BuiltWith.com)[https://trends.builtwith.com/cms] ). Other popular CMS systems don't hold a candle next to WordPress’ usage statistics. You could go so far as to say WordPress is no longer competing with other CMS’s — it's competitors are google and Facebook simply due to size.