A few years ago, when I checked PCloud and IceDrive, I realized they actually had no real end to end encryption, since they had the capability to scan your content on their server and close your account / alert the authorities if their algorithms didn't like something (according to their terms of service). Very suspicious.
Cool if they implemented actual E2E encryption more recently (did they, really?)
Unfortunately, it seems it was done poorly, and their deafening silence after this disclosure reinforces my doubts.