Actually, I got a reply from the author of a blog. It is the following
I am glad it's of help to someone! Might be dated though!
However, I understand the meaning of the first part, that the post is able to help someone. But it is the next sentence, as per my raw guess, that the author is trying to say-
"however it is old enough.."
I am uncertain whether the author wants to express the same or something else. Is my interpretation of the second sentence correct?