The oldest verified impact structure is in south africa as well.

https://news.ycombinator.com/item?id=17892966

I have a sneaking suspicion that journalists spend most of their time on social media sites like HN and just repackage stories they read here.

Also, the title should read "South African mountains older than current continents".

The article mentions it is older than the african continent and that is correct. But that doesn't make it older than continents in general. The Makhonjwa Mountains and Vaalbara ( the first supercontinent ) were created in the same time period.