Not sure if this is related in any way but the Austrian news site orf.at had an article yesterday about airlines and -ports missing staff after the pandemic for the upcoming summer season.

The article states that Swiss is planning to cancel some longhaul flights next to shorthaul flights.

"Trotzdem plant die Swiss im Sommer weitere Flugstreichungen im „tiefen einstelligen Prozentbereich“. Bei den Langstreckenflügen seien folgende Ziele betroffen: New York, San Francisco, Los Angeles, Chicago, Tokyo, Bangkok, Singapur, Hongkong, Dubai und Johannesburg." (unfortunately in German only)