Have you ever gotten a copy of a long form birth certificate? I mean in the past 10 years or so? They photo copy (or perhaps print from a scanned image) the original record onto colored, tamper resistant, paper, not just white copier paper. There is nothing weird about it, it would be weird if they had done something else.
This paper has no border or seal on it. This is a photocopy, not a certified copy of a birth certificate.
Somebody posted a link to a photo of the document and there weren’t any cross-hatches on it at all, so those were apparently added in electronically to make it appear that this was an official birth certificate. It’s not. It’s a photocopy that could have been made in any city in the world from any piece of paper that had this particular image on it.