In March of 2017 I emailed Yoast support that their readability score “is a bunch of cow dung”.
Today 3-1/2 years later I got this response from Yoast.
Thank you for your continued patience. You contacted us regarding a bug where Readability shows orange when gibberish text is used in a table. This email is to inform you the bug has been fixed so please make sure that you’ve updated your Yoast SEO plugin to the latest version v14.8.1.
Let us know if there’s anything else we can assist you with; we’re happy to help.
I’m still using RankMath on our new site.
Here’s how I know.
I’ve been blogging for 10 years.
I’m no Ernest Hemingway but I’m reasonably articulate and have several hundred thousand social media followers.
When I started seeing poor readability scores I began to test.