I also got an email from Proton saying that they're forcing mandatory arbitration and class action waiver on all users.
-Proton's updated ToS does not change dispute resolution for users outside of the US.
-Proton's legal jurisdiction is Switzerland. Swiss law does not permit class action lawsuits.
-For US users, Proton's updated ToS also does not remove your existing right to bring a claim against Proton in Swiss court (so you are not forced into arbitration).
-Recognizing that some US users might not want to bring a claim in Switzerland, our updated ToS adds the possibility to arbitrate in the US.
-We are wary of US courts having jurisdiction over Proton as it gives the US govt leverage. We suspect many of you are too, which is why people care about Proton being Swiss. Therefore, while Proton agrees to permit arbitration in the US, we don't by default permit proceedings in US court.