They don't all use ETCS. Madrid–Seville still uses LZB and Adif awarded a contract in 2021 to upgrade it to ETCS L2, but the project is delayed/unfinished

Funnily enough in Switzerland they use "Poulet" to mean exclusively chicken meat.

Sounds very french-like in origin. Do all in Switzerland use that though? Even the exclusively german-speaking part? In Austria there is a West-East difference, some words spoken by the Vorarlbergers (most western part) we don't too easily understand in the east (it's quite similar to swiss-german in some ways in the western area, but not identical either).

Yes, the GP was referring about Swiss German. Not sure if it's used in all the dialects, but at least Züritüütsch uses it.

But you're right it's most likely a much more recent import from French, just like "velo", "merci" and others.

As a foreigner, “Pouletschenkel und Pommes” makes me smile. A German word sandwiched between two French words - one pronounced the French way (“poolay”) and the other nativized (“pommez”).

Afaik the already do this. But another problem is that falling snowflakes reflect lidar pulses and heating doesn't help in that case

Same for Germany, but those don't get picked up, you go and throw them into different bins at a collection point (which is why you usually have all the glass in one bag). I'd say Germany has way more separation than Zürich. We have 4-5 at most.

Somebody said this on the xcancel thread but this also means that the Dixmier conjecture for the third Weyl algebra is disproven