I am not a Telegram expert, but it looks to me like they might decentralize encryption key storage, which maybe makes it difficult to invade privacy of data on the centralized storage, if theory holds.
They have The Open Network in progress, but I’m not certain that’s suitable for large storage size.
Some of their crypto ambitions may also get into different treatment of crypto in different countries.
As for pressure, Duplicati client-side encryption should mean storage access isn’t a privacy worry because only you have the ability to actually decrypt files. Don’t lose the encryption passphrase…
Secure by design: Using hashing and encryption to provide tamper-resistant, verifiable backups