This is something that I never understood with their "oh you are safe in Switzerland" bs. If the court presents them w/ a warrant they have to comply. There is no magically safe data haven and it isn't honest to pretend that they are one.
Switzerland does have strict laws on the topic. Data requests are only honoured for cases which are a crime both under the foreign country's law and under Swiss law.
If you live in a country where homosexuality is illegal, and your local government is chasing you because of this, a Swiss company won't comply with data requests, and a Swiss judge has no reason to honour any data request.
If your local government is chasing you because of something that is recognised as a crime in Switzerland, then they will disclose data to foreign authorities.
Switzerland famously known for anarchism, utter chaos, irresponsible tinkering with time, space (disregarding mountains, tunnels everywhere) and spacetime (at CERN)!