There is no need to mess with the E2E, the client installed on your machine is downloaded form their servers, they can just copy the data when it is decrypted l

There is no need to mess with the E2E, the client installed on your machine is downloaded form their servers, they can just copy the data when it is decrypted locally. I does not make sense to use a proprietary internet connected application on your machine and worry that that the servers might be nefarious.