I hope it happens this fast. Imagine if we can get into all NSA and CIA servers and all Congress servers, and all Senate servers and have complete oversight what all these nefarious actors are up to!
Anyway back on topic:
It's very important they are located in Switzerland!
It doesn't matter if you keep encryption keys safe when they simply shut down your company, raid your offices, throw your leadership team in jail, and eventually find the encryption keys anyway.
To be safe, you have to be in a Jurisdiction where that can't happen - far from the reach of the US authorities. The USA is a banana republic, no different from China or Russia when it comes to these things. There's no justice, recourse, law, or jury that can protect you.
Before proton mail, there was some american guy who had a secure email service - I forgot the name now but same idea. The US government shut him down and forced him to hand over the keys. Which eventually he did by printing the key over many pages and hand delivering the papers to the FBI... he was a one man shop, but even if he'd been a bigger corporation, the government will just shut you down anyway.