Oh, that actually looks really cool! Seems perfect for those times when you don’t want to start up a whole Excel / Google Sheet. That actually seems perfect for what OP is asking for, provided they don’t mind that it isn’t offline. At least it doesn’t require making an account! Pretty cool that you can share pages too.
I think what the person on Twitter wrote is in response to Rowling going off on a rant about cisgender female boxer, Imane Khelif (from Algeria), in the Olympics, and insisting that she’s a man. Rowling’s tweet here. There’s an article here that outlines the response from the Olympics, and the other female boxer, Italian boxer Angela Carini, who lost to Imane Khelif.
And as that article also notes:
Edit: Forgot to link to the article.