XHTML was never all the rage. Your premise is false.
Hard errors up front are great when you control the full content pipeline. It's very rare that that's the case, and was rare even in 2004. As soon as including someone else's broken content in your page prevents users from seeing your content, and that someone else can break the content at any time and you can't control it... few people will want hard errors.
Hard errors up front are great when you control the full content pipeline. It's very rare that that's the case, and was rare even in 2004. As soon as including someone else's broken content in your page prevents users from seeing your content, and that someone else can break the content at any time and you can't control it... few people will want hard errors.