What is also missing from your list is the fact that the main feeder line for the Gotthard base tunnel, and one of the most important railway lines in Europe, the Rhine valley railway [1], is extremely overloaded with over 300 trains per day, and the ongoing extension, which was planned in the 70ies and 80ies and for which construction work started in 1987 will not be finished before 2041 (!) [2]. It was originally planned to be finished in 2002. In 2016, the line was capped for days because the rail company (DB) chopped down some trees which were specifically planted in the 19th century to stabilize the ground (which DB was unaware of), resulting in a massive landslide [3]. In 2017, it was capped again for 2 months because of a collapse of a tunnel under construction by DB and crossing the existing line underground [4, 5]. In 2020, it was capped again because a bridge which DB planned to replace with a longer one crashed onto the rails and into a train, killing the driver [6] and nearly missing a high speed ICE train.
If the embarrasing engineering failures continue at this rate, I doubt they will finish the extension in the 21rst century.
[0] https://en.wikipedia.org/wiki/Stuttgart_Hauptbahnhof
[1] https://en.wikipedia.org/wiki/Mannheim%E2%80%93Karlsruhe%E2%...
[2] https://de.wikipedia.org/wiki/Ausbau-_und_Neubaustrecke_Karl...
[3] https://ais.badische-zeitung.de/piece/07/36/42/b1/120996529-...
[4] https://en.wikipedia.org/wiki/Rastatt_Tunnel#August_2017_col...
[5] https://bilder3.n-tv.de/img/incoming/origs19996186/831279596...
[6] https://www.schwaebische.de/cms_media/module_img/12646/63233...