Didn't proton fold like a wet napkin when they were asked for information about their users? What I mean is: Switzerland as a whole is probably the wrong metric...

These are also political decisions and the EU is much more powerful politically than Switzerland so if your adversary is the US and they're willing to use lawfare or more than you should probably go with the EU and not Switzerland. Germany is considered one of the most robust legal systems for privacy.

But there is always risk no matter what you do.

Switzerland - as well as EU based providers - have to comply with court orders. And the EU as well as Switzerland issue court orders upon request from friendly foreign states ("Rechtshilfeersuchen" in german) - such as the US.