Earlier quoted context omitted.
German trains, as recently as the 90s, were phenomenal, and integrated superbly with the Swiss and others. It is in the 21st century that Germany has gone off the rails.
German trains were great twenty years ago. I wouldn't be surprised if things went haywire after lockdown. Many things did. It gave people a licence not to work and introduced a sloppiness into everything.
Just don't count on them that they bring you to your destination in a timely manner.