I used proton for about 5 years. I got that survey, it asked "where" not "if". I had already been reassessing email and other net services in light of Current Political Conditions and getting services out of the browser.
The AI thing was the final straw. I've moved my email to a traditional port based service, via thunderbird. A bit of a step backwards in spam filtering but I don't think I spend even 5 clock minutes a day on that.
Glad I stepped off that sinking ship.