Maybe "vanilla as possible" is not desirable if it means that your markup is non-semantic. I like that Txt.fyi tries to be as simple as possible, but there are

Maybe "vanilla as possible" is not desirable if it means that your markup is non-semantic. I like that Txt.fyi tries to be as simple as possible, but there are some UI anti-patterns like the textarea placeholder instead of a matching label. It would be pretty easy to add the proper HTML elements like <header> and microformats.