Proton is fine if you are looking for encrypted communications between Proton / PGP users. It's important to remember it is ABSOLUTELY NOT for anonymity. In this case, a user was unmasked because Proton had their payment data. https://www.404media.co/proton-mail-helped-fbi-unmask-anonymous-stop-cop-city-protestor/
About five years ago we learned that Proton shared the IP address associated with a French climate activist with Swiss police, who passed it along to French police.
Again, Proton is not for anonymity. https://techcrunch.com/2021/09/06/protonmail-logged-ip-address-of-french-activist-after-order-by-swiss-authorities/

