Not sure how this relates to the article, but this is news to me (European). We slowly began potty training somewhere between 1 and 2 years. I have never heard of anyone doing potty training at six months. Babies are just barely able to sit upright at that age.
Where did you hear that? Admittedly here in the UK we've been doing our level best to extricate ourselves from the continent, but I've only ever heard of one mum even thinking about it before 18 months. Ours is just over a year and we haven't thought about it at all yet, same with our ante-natal group and friends with slightly older babies.
I googled around a bit and this reddit thread has a lot of Europeans with similar experience to me: https://www.reddit.com/r/Mommit/comments/tdb1f2/what_are_non...
https://www.google.com/search?q=baby+abhalten+*.de
Our baby was born potty-trained (which actually means the term is misleading in our case) and a relative started at their childrens' birth.
It's a system that works quite well if the baby is exclusively cared for by a stay-at-home parent or a long-term nanny (and no other babies or toddlers in the house to distract the parent/nanny). But try to leave the baby with a new sitter or at a daycare - they have no idea what your baby's cues are and cannot be bothered to learn them; so back in diapers the baby goes.
Hailing from Poland; first I hear of this. I know of total of two people who said something like this before - one person is saying a lot of other borderline insane things about parenting, and the other has a business selling webinars around the idea of potty-training kids less than a year old.
Funny. I am European and we have this myth about Asia.
Wait, what do you think potty training is?