The title is heavy clickbait. To say I just bought a Porsche when it was actually a Volkswagen is also wrong. Just because they belong to the same owner doesn't make it the same brand.
VW bought Porsche
However it was more complicated than that. Porche owned 50+% of Volkswagen at the time of Volkswagen buying them. Porche got over extended and leveraged buying Volkswagen . The management family is closely connected since the start and at the time in early 2010s 20% government ownership rule was just getting stuck down by European courts .