I tried to read that article. You’ll notice that the end of my message refers to the Steam rating system, which is mentioned towards the end (or at least I think it was the end) of that article. Problem is, this site is utter fucking shite, and most of it was obscured with scrolling tracking ads as I always trying to read. So yes, I missed the part about it just being a form to fill.
As for “official”, yes, I know PEGI/ESRB/Whatever are industry-controlled. But for better of for worse, they’re still used as reference, and they’re third party (though clearly not that independent). It’s still different from declaring yourself what your game contains.
Yeah, well I tend to give sites I don’t know the benefit of the doubt, which is why I don’t ad-block by default. Now I know this one doesn’t deserve to exist at all.