They law part is not true, according to the website they provide almost all of the German laws. The site is also linked from the ministry of justice itself, so it is definitely legit: https://www.bmj.de/DE/Service/GesetzeInternet/GesetzeInterne...
They even have an RSS feed when laws are updated: https://www.gesetze-im-internet.de/aktuDienst.html (Funnily enough, they also say IE 6 does not support the RSS feed)